Casualty (series 18)

Baz admits to Dan that she is back with Charlie, prompting him to go to the hospital and hit him. A man is brought in after a car accident. An earlier accident meant he is unable to form new memories, being unaware that he split up with his wife. The police arrive to arrest him for unpaid parking fines and failure to appear in court, and Simon explains the situation. A group of soldiers relax after an exercise; the corporal, Dale, gave one of his men, Darrell, speed after he had a fall. Darrell collapses and Dale keeps quiet; he turns out to have a head injury which the drugs disguised and dies in Resus, to Luke's disgust. A mother comes in after having a fall while drunk. Her estranged husband turns up, belittling her in private while putting on an act in front of the staff, and tries to use it as an excuse to take the children away from her, since she has no-one to look after her. Abs suggests to her that she can choose to discharge herself against medical advice and she leaves with the children. Nikki and her friends go on her hen night but end up at the same place as Jim, Andy and Simon. Simon leaves with Tally while Lara ends up getting intimate with Luke in the hospital car park, unaware they are being captured by CCTV. Claire sees Nikki with Andy and Nikki admits what is going on.

Guest starring Ben Hull, Ian Jeffs and Gareth David-Lloyd

Nikki is preparing to marry Jim but is full of nerves. She turns up at the registry office but ends up running away. Andy tries to dissuade Jim from going after her while Nikki refuses to speak to him. Bex takes a security tape to investigate a theft from her car and sees Luke and Lara having sex, playing it to the staff. A man with persistent headaches who keeps getting sent home by Lara collapses in reception. Lara refuses to listen to security guard Evans' theory of cluster headaches so he takes it to Harry who confirms it. Colin gives Harry the security tape, leading to a showdown between him and Lara. Simon rejects Tally after their night together. One of Bex's old teachers, Bullet, comes in with his wife Mavis; they both have injuries from a carving knife. Simon, Abs and Bex all suspect domestic violence but it turns out Mavis has multiple sclerosis and rejects Abs' suggestion of cannabis as a treatment. A young man comes in with a punctured lung after getting a woman to stand on his chest; Lara realises he was trying to look up her cleavage. Luke goes to Dale's major to complain about his behaviour resulting in Dale having him beaten up. Baz has to tell Louis Dan is going back to Canada alone while she is staying with Charlie. She reluctantly agrees to accompany Dan to the airport so Louis can say goodbye. Louis acts up and Baz takes her seatbelt off to remonstrate, just as a distracted Dan swerves to avoid an oncoming car and crashes into a wall. Louis has a broken arm but Baz has a possible fractured skull. Charlie stumbles upon the accident scene and accompanies an unconscious Baz to hospital.

Guest starring John Castle, Diana Weston and Ben Hull

Charlie has a run-in with a woman who is refusing to look after her mother at home, meaning she has to be admitted. A man is brought in with his teenager daughter having had a fall; he is in end stage of liver failure. His daughter eventually admits that her mother walked out on them years ago and she has been looking after him on her own. The staff accept the pair want to stay together until the end but then they get the news that a match has been found for a liver transplant. Bryce visits Luke and says he is going to go to the army about the amphetamines, meaning he and Dale will both be discharged. Dale tries to commit suicide in his car but Luke and Josh save him. Comfort is at home nursing a hangover when a neighbour, Jude, calls him to look at a badly beaten woman, Zanna, in his flat and she summons Fin and Nikki. Zanna claims Jude attacked her while on drugs but Jude says Zanna has been stalking him and broke into his flat. Nikki goes looking for Andy but finds he has a girlfriend and only slept with her to prove she wasn't right for Jim. Abs is visited by Mavis and he puts her in touch with someone who can get her marijuana. A girl is brought in with a broken arm after running away from something; it transpires she and her friends caused an accident by throwing stones at cars. Tests show Baz is brain dead. Charlie and Kenneth are in favour of organ donation but Dan, still next of kin, is against it. After witnessing the A&E staff looking after the car crash victims and realising that was what Baz did, Dan changes his mind and gives permission.

Guest starring Ben Hull, Elyes Gabel and David Gooderson

Harry, Simon and Roxy revive a woman who had a heart attack. She tells Roxy she had a near death experience and wonders why she was sent back when she has done nothing with her life; Roxy convinces her to take an open university course. Charlie and Josh attend Baz's funeral and Charlie is concerned that Dan intends to take Louis back to Canada. A neighbourly dispute in which James' building work threatened the tree Norman planted for his late wife has resulted in James being sprayed in the eyes with paint, meaning he might go blind, and Norman being hit in the head with a shovel. James' wife Beth attacks Norman in the department and hits Lara. Harry uses this as another excuse to criticise Lara but she tells him the nurses are picking up on his unprofessional attitude and Tess is threatening to report him. Norman deteriorates and dies, meaning James could be charged with manslaughter. Mavis comes in after suffering an allergic reaction to cannabis. Simon convinces Abs to apologise and Brian agrees not to take it further. Lara treats a woman who twisted her ankle in a rabbit hole after skydiving. Luke and Nikki are called out to a couple giving birth on a ley line; the boyfriend panicked and phoned them but the woman refuses medical help, even though it turns out she never had tests and didn't know she was expecting twins. She is unhappy when they are taken to hospital and tries to remove them, but accepts help when the baby girl stops breathing. Jim questions Claire who lets slip that Nikki and Andy slept together.

Harry, Simon and Lara are away on a staff development course, leaving Jim in effective charge. He and Abs try to get Barry, a patient with kidney stones, admitted but he ends up passing it without help. Charlie gets a court order to keep Louis in the country when Dan goes back to Canada. A house fire has engulfed two neighbouring buildings: Borko, who lives in one house, is brought in with the four children from next door, one of whom, Matthew, has burned hands. The girl, Kirstie, dies in hospital. Father Tom was out driving while mother Nina admits she has been working as a receptionist at a massage parlour and stayed late because a client gave her £250 to sleep with him. Fin catches Comfort drinking at work and sends her home. Things are tense between the trio at the team building, especially since Lara has slept with their instructor, Leon. They go into a cave system but Harry follows the sounds of another team instead of their route and falls, injuring his leg. Leon, who was watching from afar, goes to help but also falls, breaking his neck. Lara is unable to find the way out and ends up pulling down their rope, leaving her and Simon trapped with Harry. The other instructor, Stuart, calls Mountain Rescue. With water pouring into the crevice, the doctors accept there is nothing they can do for Leon and attempt to climb through an underwater passage to safety but Simons hits his head and lies unconscious in the water.

Lara manages to drag Simon to safety, although he suffers spinal damage. The trio are found by a rescue team while another team retrieve Leon's body; Harry and Stuart argue over who was to blame. Jim keeps the accident secret from Tally and the rest of the staff until they are brought in. Andy turns up at the department and is punched by Jim. Fin refuses to let Comfort accompany him on a shout and has to take Conor, a businessman having a panic attack, to the hospital on his own. When Josh finds out, he warns Fin they could both be fired. Tom is racist towards Borko, despite him carrying Matthew and Kevin to safety. Matthew tells his parents he started the fire to please Tom, who kept raving about getting rid of foreigners. Borko dies from smoke inhalation. Nina tells Tom that if the fire is traced to their family one of them will take the blame for Matthew. Jim and Abs meet Alesia, a doctor who is in jail for mercy killing two people including her mother and is now terminally ill. She asks them to increase her pain medication to fatal levels and also tries to get Abs to turn a blind eye to her stealing an extra dose of morphine but they refuse. Lara overhears Simon's test results and tells him he has a less than 20% chance of walking again.

A young woman returns from abroad to find her elderly father has handcuffed himself inside the house where he has lived all his life, which is due to be demolished. He is taken to hospital with malnutrition but slips back at the house. The workmen start to demolish it, thinking it is empty, and he is killed. A pair of newlyweds tried to get intimate on a ghost train only for the man to get his leg run over by the vehicle. He will have to be admitted and Lara arranges for his wife to stay with him. A vicar brings in one of his parishioners who has been beaten up. In fact, he is the secret boyfriend of the vicar's ward who was subjected to a homophobic attack. The ward reveals the relationship to the vicar even if it means not being welcome at the church. Lara continues to visit Simon who gets feeling back in his foot. Charlie has a meeting about custody and is disheartened by how little he knows about Louis and his life in Canada. Nikki gives Claire the cold shoulder before admitting she's pregnant and doesn't know whether Jim or Andy is the father. Fin plans a romantic meal with Comfort but she goes out with Luke and comes home drunk. Fin walks out and instinctively pushes Comfort over when she tries to stop him leaving.

A boxer, Glen, is training for a bout but a man who is filming them, Roger, falls through a skylight, injuring Glen's manager Andy who is on crutches after an accident. Roger turns out to be working for an insurance company who believe Andy is faking the injury, which happened when Glen was about to dump him for a big contract, and is proved right. Andy argues that when he worked for a big firm they took all his wages. Glen goes through with the bout but his opponent collapses afterwards and he tells Andy he is leaving him for Vegas. Bex gets a lot of Valentine's cards and Tess gets flowers from Mike, although he has to work as a bouncer at the boxing to pay for it and is injured. Charlie is nursing a dying Kenneth and worries he is not impressing child welfare. Simon is discharged; he turns away Tally when she comes to visit him but nearly kisses Lara. A heavily pregnant woman turns up having tried to induce labour so she can go to a party and is pleased when she succeeds. Another woman who has been trying for a baby turns up with abdominal pains; she is pregnant but she is horrified that her husband, worried that her slimming was making her more attractive to other men, had been feeding her steroids and anti-diarrhoea pills that may have harmed the baby. Comfort tells Tess that Fin hit her and he arranges to stay with Luke. Nikki tells Claire and Roxy she is going to have an abortion.

Charlie attends the custody hearing with Dan. Kenneth has supported Charlie and Louis has expressed a desire to stay with him but things are less than certain. The court is adjourned when Kenneth is rushed to hospital, where he refuses further treatment and dies. Dan accepts Louis wants to stay with Charlie and they part on good terms. A teenager, Charlene, argues with her foster mother, Lesley, and ends up cutting herself on broken glass. Luke and Nikki come to collect her and Nikki ends up sitting on glass. Jim tries to send her for an x-ray but she doesn't want to admit she is pregnant so Roxy covers for her. Charlene calls her old foster mother Bella, who used to foster Abs, and is convinced to make things work with Lesley. A patient Bex left waiting in reception turns out to have a subarachnoid hemorrhage and is rushed to theatre. Simon returns to work in a wheelchair; his first patient tries to slip away having realised she is diabetic. Simon gets Bex to talk to her and she accepts treatment. Simon and Lara kiss but she backs off.

Simon is out of the wheelchair; his first patient is a man who thinks his pains are indicative of a chest problem but are actually a muscle injury. He later treats a man who drove into a bus shelter, who he previously treated for blackouts; the man has a sleeping disorder which went undetected because he ignored a GP referral. Harry criticises Simon's handling of the case but Lara defends him. Frank, who works in a chip shop owned by his son Kenny, has burned himself after a fryer overflowed. Frank is refusing to retire despite selling the shop since it reminds him of his late wife. Kenny sells half the shop to his brother Ged and they plan to convert it into a modern cafe with Frank deciding to move away. A young woman brings in her boyfriend insisting he needs his stomach pumped; Simon and Tess learn he ate a pie that she had hidden an engagement ring in, which should pass naturally. A girl is brought in by her father after an accident at karate. Roxy is suspicious and asks Abs to investigate; it turns out the father, once a violent drug addict, is banned from seeing her and her mother thinks she was at dance class. An attempt to hide the truth from the mother doesn't last long and Abs advises the father to seek legal access. Simon and Lara kiss but he refuses to have casual sex with her. Fin and Comfort are meant to be going to a counselling session but she fails to turn up after passing out drunk. Roxy tells Jim of Nikki's pregnancy.

Luke and Nikki find Luke's old coach, Percy, has tried to gas himself in a lay-by. He admits he raped his 12-year-old granddaughter Katie in her sleep. He takes an overdose but Abs realises the half-hearted suicide attempts are an attempt to have himself declared not responsible. Percy's son-in-law Peter and turns up and says Katie told them the abuse has been going on for two years. He threatens the staff with paddles to stop them treating Percy but Abs talks them down. Fin and Comfort are called out to a flat where an obese woman has suffered a pulmonary embolism; her husband explains comments about her weight caused her to shut herself away in the flat, putting on more and more weight. The lift is broken, the stretcher won't hold her and even the fire brigade can't get her out. Lara is summoned but she dies at the scene. A woman is brought in after collapsing at the gym and Simon diagnoses a salt deficiency. Harry questions it but Simon is proved right when it turns out she has been losing weight for her sister's wedding. A man comes in who has been having panic attacks about proposing to his girlfriend. The staff help him and his girlfriend accepts but then tells the staff she isn't going to marry him; he is her boss and she only started dating him to help her career. Jim tries to talk Nikki out of the abortion but she goes to the clinic anyway. Simon and Lara spend the night together and are seen kissing by a jealous Tally.

Nikki is angry that Roxy told Jim about the abortion feeling she has made things worse. Simon and Lara look after a woman who had an accident dyeing her hair; she has been going on blind dates. Her latest one, a compulsive gamblers, turns up with an injured hand but Claire tells her he is married. Middle-aged twins Roberta and Mary arrive; Roberta has terminal cancer. Mary has been secretly starving herself, not wanting to live without her, and refuses help. Roberta never married because Mary claimed Roberta's fiancé seduced her; in fact, as she admits before she dies, he turned her down. Adam and Julie turn up to complain about Roxy still working; Tess defends her, even though she disapproves of what she's doing. At a boat yard, owner Greg's daughter Shelley flirts with his apprentice Cal, even though she is now engaged to someone else, and accidentally causes a boat to fall on him. Shelley goes to get Greg, who drives his car into a junction box. Fin and Comfort arrive and Greg and pregnant Shelley are taken to hospital. Comfort stays with Cal and a loose electric wire falls on the shed roof, electrifying the walls and the boat. If Comfort touches Cal, she will ground it and kill them both. She intubates him using a rubber coat as insulation and miraculously they both survive. Comfort's faith is restored but she tells Josh she is resigning in order to find herself again. Tally tricks Simon into meeting her but he rejects her advances.

A young woman with Down's Syndrome is brought in by her father after drinking a small amount of bleach. It transpires she is pregnant; her father hit her boyfriend on learning they were sleeping together and tries to organise an abortion without her agreement, but it transpires she drank the bleach because he belittled her. The boyfriend is brought in with a serious brain injury and the father is reported to the police. The daughter intends to bring up the baby without him and Tess arranges for social services to assist her. Teenage siblings Scott and Becky take Jason, whose mother lives with their father, with them when they use a model aeroplane. An argument between the teens results in the plane hitting Becky in the head. Further conflict at the hospital sees the parents nearly split up but they agree to try harder. Simon looks after a model whose breast implant burst; it isn't harmful but she will have to pay if she wants a replacement. Tally follows Simon and Lara back to Simon's flat and throws a brick through the window. Comfort tells Fin she has started attending church and AA meetings but still intends to leave work when her notice is up; he accompanies her to a meeting to support her. Nikki plans to move out. Roxy, who suffered a knock earlier, has a minor car crash outside the house and goes into premature labour. Nikki delivers a baby boy in the back of the car but he is rushed to hospital with breathing difficulties.

A teenager has suffered minor injuries after an accident on a stolen scooter. As he is being discharged, his father is brought in, having collided with a taxi. After he and his son argue, it transpires he has a heart injury and he dies. A young man and woman who were in the taxi are brought in. The woman has facial injuries and tells her boyfriend she has been having an affair with the man she was with; in fact, she barely knows him but was giving her boyfriend an opportunity to leave her. Claire stops the other man stealing from her bag. Tally tells Harry that Simon has been hassling her. Harry tells Simon to stay away from her and also announces his and Lara's relationship to the department. Baby William is in paediatric intensive care but suffers a seizure; he has a bleed on the brain and may be left with brain damage. Adam and Julie aren't sure if they can look after him so Roxy vows to stand by him.

Claire and Nikki are looking after Nicole while Roxy spends all her time with William. All of them are tired and Tess suspects they aren't coping, suggesting to Roxy that she give William up for adoption. Abs treats a boy, Mickey, whose mother Gina hit him for not eating. It turns out his gums have grown over his teeth, which a trip to the dentist will sort. A young woman is brought in after collapsing. Tally deliberately withholds the fact she was on steroid treatment to make Lara look bad. She realises how serious the situation is when the patients deteriorates and afterwards Simon and Lara confront her. Josh and Luke pick up a goth who was beaten up at a council estate. They later get a hoax call to the estate during which a heroin addict, Greg Millar, hides in the ambulance. He takes Luke hostage in the back with a gun so Josh will keep driving but Luke refuses to give him drugs, knowing he will overdose. They struggle and the gun goes off, hitting Greg in the stomach. He dies in hospital and Luke is left facing an enquiry, which Greg's wife Kate blaming him.

Josh and Luke are called out to a set of flats where they find a man, Toby, collapsed from a drug overdose having just had a kidney removed and his pre-school son Zane with minor injuries. It eventually transpires that Toby was clean; his estranged wife Tina gave him the drugs after he agreed to sell a kidney to pay off her debts to her dealers. When it becomes clear Tina has no intention of quitting drugs, Toby agrees to Zane going into care until he recovers. Josh has to suspend Luke pending an investigation into Greg's death. Lara reports Tally when she sends a patient home without medication and Harry has to suspend her; it is Beth's birthday. Julie and Adam tell Roxy they will look after William even if he is disabled. Mickey is brought in by his father Ken; Gina took him off his epilepsy medication after misunderstanding Abs' instructions. Simon refuses to back Abs up. A man is brought in after a car accident when his teenage son was driving. He has terminal cancer and his wife wants to withdraw treatment. Tally talks to the son, admitting she still blames herself for Beth's death. The mother is convinced to tell the son the full extent of his father's condition and he agrees to abandon resuscitation. Simon and Lara attend a ball together and she is distressed to find he has speed on him. Tally is found collapsed in the toilets from an overdose.

Guest starring Joel Dommett, Kate Duchêne and Joseph Aston

Tally is rushed into Resus with Bex finding an empty pill bottle. Jim manages to resuscitate her and she is taken to intensive care. Harry initially blames Lara but later admits he has been a bad father. There is a riot at the prison; a guard is brought in badly beaten and dies despite the staff's efforts. The prisoner responsible is secured in Paeds Resus. It is agreed all prisoners injured will come to Holby so all other patients are cleared out, although Abs allows Stevie, a journalist doing a profile on him, to stay. She tries to secretly record an interview with Terry, a prisoner who says they were protesting against over crowding, and Abs throws her out despite her threatening to run with the Mickey Driscoll story. Simon, Lara and Roxy are all recalled to duty and Roxy befriends Matty, a prisoner with cuts that Tess thinks were self-harming. A gang member who faked an injury slips a stun gun to a prisoner who uses it on a guard and takes Roxy hostage but Matty saves her. An elderly long-term prisoner wants to go back to the prison, seeing it as home; tests show he has terminal cancer and one of the guards delights in telling him. Abs threatens to report him. The prisoners are sent back to the prison hospital. Desperate to win Lara over, Simon asks her to move in with him.

Abs' mishap with Mickey is in the papers but Tess advises him to keep working. An elderly woman falls down the stairs at a care home and is left in a state of shock. A male resident accompanies her to the hospital. Lara and Claire find evidence of physical and sexual abuse. The manager initially claims his wife handles things, then admits she left him recently and he has struggled to cope. Claire finds the male resident forcing medicine down the woman's throat and is briefly held hostage by him until Lara talks him down: He was behind the abuse and is arrested. Lara visits Tally and they reconcile. Harry decide to take leave and take Tally away for a while, leaving Jim in charge. Lara declines to move in with Simon. Roxy runs to Neonatal when she learns Julie tried to call her, but finds William is now breathing unaided. She tells Julie she can't have any more contact with them. A car has driven into scaffolding outside a house, causing a builder to fall, and then driven off. The home owner, Lewis, who works nights, fell asleep and lost his young son Sean, who is found buried under rubble in a skip. He is rushed to hospital but dies. Lewis' wife Celia, who was at work, argues with him and Lewis blames Abs, recognising him from the paper. A man comes in with facial injuries caused by his wife, who has severe PMT: She turns out to have been the car driver and is arrested. Simon finds Abs badly beaten outside.

Guest starring Israel Aduramo, Jerome Willis and Mike Grady

Abs returns to work after his beating and is placed in triage but annoys Jim by continually sending him minor injuries. Abs admits his confidence is shot and Tess tells him to go home early. Jim meets with Helen Grant and proposes abolishing moving patients out of Emergency within three hours, which would ease the pressure on wards. Charlie and Tess suspect him of career climbing. A young woman finds her salon on fire; a friend tries to fight the fire but causes some aerosols to explode, with the salon owner getting the worst of it. She is annoyed when she finds her friend started the fire by falling asleep with a lit cigarette. It turns out the friend knows she has Hodgkin's Disease: Lara tells her it is treatable. A boy is brought in by his father and it turns out giving him aspirin for flu has given him Reye syndrome. However, the experience does leave his estranged parents reconciled. Luke visits and arranges a drink with Bex. A man with an injured ankle that Jim sent away is run over and killed in the car park. Simon walks out and Lara and Abs find him passed out at home from a combination of sleeping tablets and amphetamines.

Guest starring Hywel Morgan, Louise Delamere, Harry Landis and Tupele Dorgu

Jim's refusal to send patients to ward is clashing with the nurses' refusal to discharge them when they aren't fit, leaving the department overcrowded. Charlie talks to the Direct of Nursing, Pauline, and learns the wards have filled their beds with patients on the waiting lists. A boy, Nat, is brought in by his mother Kerry and turns out to have low blood sugar; his father Reg has been using insulin for body building and Nat got hold of a vial. A young couple, Chris and Gloria, are chased by the police: Chris took his father's car without asking. He crashes and has to be cut out of the wreckage. Chris' father Benny has been lording it over the neighbours since a lottery win and tries to get rid of Gloria by threatening to report Chris for theft. Chris needs emergency surgery and may lose his arms; he refuses to go into theatre without seeing Gloria so Benny has to ask her to come back. A woman who ran over and killed a boy five years ago turns up convinced it just happened; Charlie and Abs insist on admitting her for psychiatric treatment. Luke and Bex go to a speed dating event but prefer each other's company and share a brief kiss. Simon admits to Lara he has been using sleeping tablets and speed to deal with nightmares since the caves. Fin learns the ring he was going to give to Comfort has been found near the train railings. An elderly woman comes in with angina and there is no room in cubicles to give her an ECG; Charlie forcibly clears bed on the wards but she dies in reception. Abs wants to take the nurses out on strike and, when Helen and Pauline support Jim's policy, Charlie decides to approach the Royal College of Nursing about taking industrial action.

Guest starring Geff Francis, Sandra Yaw and Dean Andrews

Harry returns from leave to find Charlie and Abs in meetings with the union; Tally has stayed behind in South Africa. Harry tries to set things right but can only stipulate that patients have to be moved within six hours. An elderly woman, Miriam, has been left on a trolley in a corridor for hours and her son Tom has to resort to buying a pizza to get her a hot meal. When Pauline gives an available bed to a patient with less needs who was about to breach twelve hours, Charlie drafts a resignation letter. A businessman, Michael, comes in with pains but Jim exposes him as a hospital hopper who taped a kidney stone to his back so it would show up on x-rays. Simon treats Archie a patient with a pneumothorax and a mistake on the x-ray causes him to put a needle in the wrong lung. He convinces Archie not to make a complaint and Abs agrees to keep quiet. Fin takes Comfort on a picnic on their afternoon off; he proposes and she accepts. A patient, Mary, has severe burns from an immersion heater exploding and Lara goes with Josh and Nikki when they transfer her to St James'. Afterwards, the trio go to a call at a jeweller's and are held hostage by brothers Karl and Damon, who were robbing it: Their accomplice Lee was struck by the shopkeeper, Awais, with a baseball bat and Awais' wife Salma was shot. It is decided Karl and Damon will take Lara, Nikki and Lee to hospital then carry on in the ambulance, leaving Josh, Awais and Salma locked in the shop. Josh gets free and Nikki hits the panic button. The police back off when the hostages are threatened and the group take refuge in a multi-storey car park. Fin and Comfort go to the police cordon but the robbers are spooked by a coincidental appearance of a patrol car and throw one of the hostages off the top.

Guest starring Grant Gillespie, Bhasker Patel and Pip Torrens

Nikki is the one thrown off the roof and Fin and Comfort are allowed to help her after the robbers have left with Lara in a van. Karl objects to Damon hurting her and causes him to crash the van and harmlessly discharge his last shot, resulting in them being taken in custody. Nikki makes it through surgery but Lee dies of his wounds. Damon blames his brothers for everything except the robbery. Miriam is transferred up to a ward after reaching the six hour limit. Harry notices the mistake with the pneumothorax but Lara takes the blame for it; however, she is disgusted when she finds Simon still has amphetamines. Fin and Comfort bring in a drunk who ran into their ambulance when they confiscated his keys. Tess meets Ben, an addict who is going cold turkey; he was on a methadone programme but his family had to move when their house was firebombed by dealers. Charlie and Abs get him onto a new programme but Harry refuses to give him methadone, resulting in him collapsing in the department. Charlie tells Josh he is going to resign and that Dan has asked him to run a homeless shelter that Baz set up.

Harry and Josh speak in Luke's favour at the coroner's inquest and a verdict of accidental death is given. A boy with cerebral palsy is brought in by his father with an injured ankle; both know that the boy's mother walked out on them but are pretending to the other that she's away on a retreat. The man is working from home but collapses from a mild heart attack. The boy decides to ask Social Services for help so he can go back to work. Harry admits the boy against Jim's recommendation. Simon is struggling with withdrawals and considers confessing to Harry. He nearly admits a woman waiting for an operation who has vomited blood but Tess and Lara realise she is faking. A girl, Kirsten, takes her baby son Sam to stay with her mother Carol while her father Gavin, a recovering drug addict, is away. After arguing with her stepfather Peter, Kirsten returns home where Sam falls ill. Gavin admits he mixed the powder milk with cocaine, causing an overdose; he is arrested and Kirsten goes to live with Carol. Harry is confused when Charlie tells him he's resigned and it's his last day: Josh and Abs intercepted the resignation letter. Charlie is convinced to take a six month sabbatical instead, with Tess replacing him as acting clinical lead. Nikki is recovering; Comfort asks her to be bridesmaid and Fin asks Luke to be best man. Nikki learns she has nerve damage and her arm is permanently paralysed, meaning she has to give up her job.

Guest starring Richard Ridings, Francis Magee and Paul Henshall

Luke has returned to work and brings in Marcus, a teenager prodigy who cut his hands in a fall. Jim and Abs discover several unrelated bruises. Simon tells Harry about his amphetamine problem; he is resigning and this is his last shift. He tells Lara he is going home to Sheffield. Charlie returns to clear out his desk. A young woman, Lucy, hits herself with a paper weight and tells Neil, her stepson and lover, that his father Michael did it. Neil accidentally causes an explosion at Michael's tannery by lighting a cigarette. Lucy dreams of getting Michael's money in the divorce but he knows of the affair and has made sure nothing is in his name. Among the other casualties is Keeley, a teenage girl working there with her older brother Aaron. She is placed next to Marcus and realises he can't see properly. Simon discovers he has a degenerative optical nerve condition that will eventually leave him blind; Marcus already knew but didn't want to tell his father. It turns out Keeley is only fourteen: Her mother is mentally ill and Aaron is hoping to adopt the other children when he turns eighteen. Roxy says she will have to call Social Services and Keeley tells Aaron she wants to go back to school. The staff race to Fin and Comfort's wedding. Josh gets on well with Comfort's friend Caroline, Luke arranges for Fin's father Neville to travel over from Tobago to attend and Nikki says her goodbyes after Comfort convinces her to go travelling like she planned with Jack. After the service, Lara finds Simon and asks him to stay and marry her.

Guest starring James Haggie, Jane Danson and George Harris

Comfort and new ambulance technician Nina Farr are called out to a church; the groom called off the wedding at the last minute and the bride jumped from the tower before being punched by her father. Nina gets caught in traffic and drives dangerously on the path. She later flirts with Fin before discovering he is Comfort's husband. The bride admits she was bluffing and slipped; her father tells the groom, who walks away even though she needs surgery. Nina helps out at a car accident by getting the driver out of the smoking car by unscrewing the wheel and later chats with Abs. Josh has a disastrous date with Caroline: He has cooked chicken not knowing she is vegetarian, and left the bath running so the ceiling collapses on him. Comfort lets Nina patronise him before she finds out he's her boss. A female athlete is brought in after collapsing and admits she recently had an abortion; part of the tissue was left in the womb, causing an infection. Her husband, who lost a baby with his first wife, didn't even know she was pregnant. When he learns she deliberately got pregnant and had an abortion because she heard it released endorphins, he walks away from her disgusted, even though Lara doesn't see anything wrong. Bex attends a first aid cause and learns Luke is one of the instructors. They later kiss. Simon is attending drug counselling. Lara tells Harry they are engaged and asks him to ignore Simon's resignation. When he refuses, she threatens to report him for self-medicating.

Guest starring Eric Barlow, Justin Salinger and Abbie Hurst

A teenager, Sophie, is brought in after collapsing and signs show she has recently given birth and has an infection. Fin and Nina join PC Davies in rescuing a week-old baby boy found abandoned in a flat. The flat's owners, Peter and Angela, have no idea where the baby came from but it turns out Sophie is their daughter: The father, Terry, is an older married man she had a fling with, who has convinced his wife they should raise the baby. However, Tess and Davies tell all involved that social services will have the final say. Harry tells Simon he can return to work if he undergoes drug counselling. Caroline visits Josh but isn't ready for a relationship; Harry and Jim take him out for a drink. Bex is delighted after spending the night with Luke, but after she tries to arrange a dinner, Luke admits he finds her too controlling. Two students try to get to the bar through the sewers for a date but one of them suffers an epileptic fit and the other falls while going for help and crushes his hand. Nina takes breathing gear to search for the first one and keeps him alive until the fire brigade arrive. Fin criticises her for ignoring protocol but covers for her with Josh. However, Comfort threatens to report her.

Ambulances are called to a collision between a bus and a car, caused when the bus swerved to avoid an elderly woman, who has facial injuries. The woman is taken to hospital and her husband sits with her as she dies. As he leaves, he runs into his wife: The dead woman stole her handbag. Although the shock causes him to collapse, both are grateful to be reunited. Nina fails to clear the scene at the accident and Comfort has to stop onlookers using a lighter. She reports Nina's breaches of protocol to Josh, who tells Nina she needs to learn to work as a team. Josh is struggling sleeping at a noisy B&B so Jim invites him to stay with him. Simon returns to work, curing a boy of hiccups and asking Ash to be best man. Among the bus passengers are Carol, who has won a Slimmer of the Year competition, and her overweight friend Kim who she belittles. Simon and Tess allow her photoshoot to take place at the hospital but she starts coughing up tapeworms; she swallowed tapeworm eggs to lose fat. Andrew, the young man she is interested in, makes it clear he prefers Kim and leaves with her. Abs looks after a man who has attempted suicide; he fought off one bout of depression but can't face doing it again. Abs learns he is actually suffering from a thyroid problem. He gets in the car with the man when he tries to crash it and manages to stop him by revealing his wife is pregnant. Simon tries to reset the car driver's arm without full results and fails because of other injuries, resulting in Harry stepping in. Simon takes speed at work and confesses to Lara.

Simon is still struggling to overcome his addiction. Jim has to bring the puppy he bought for his daughter in to work. Josh and Nina save the puppy from choking, working together as a team for the first time. Jim promises to arrange transport for Simon for the wedding.

A young Asian man, Mo, leaves his pregnant girlfriend Tas alone in their flat. Comfort and Nina later find she has been attacked after being called out to a domestic. Tess and the police suspect Mo, but when her father and brother turn up at the hospital and cause trouble, Roxy realise they were responsible. Mo explains he and Tas were dating when her family took her to Pakistan and forced her into an arranged marriage. They carried on seeing each other while her husband was waiting for a visa and ran away when she got pregnant. Tas has an emergency caesarean; now she has had a baby, her family will disown her and leave her in peace. A man, Bobby, is brought in after collapsing; Stella, the woman he was with, admits he is in the process of leaving his wife Norma for her. Simon discovers he has had a stroke that will leave him disabled and Stella feels she can't nurse him, although Norma sees them saying goodbye. Stella gives Simon her number. Lara gets the details of the stag party from Abs and turns up there with her hens. Claire tries to plead Bex's case to Luke but he ends up kissing her instead. Simon is annoyed that Lara didn't trust him and goes round to see Stella.

A five-year-old girl is brought in after being badly burned in a house fire; her mother explains the boy next door is being targeted by bullies and the flat was firebombed with the fire spreading. The neighbour turns up with burned hands and admits the council refused to rehouse them, claiming the attacks were random, so he set fire to his own flat thinking the neighbours were on holiday. He is arrested. A man is brought in with muscle pains after falling down the stairs and discovered to have a form of arthritis caused by chlamydia. His wife, the only person he has ever been with, admits to a drunken one night stand and they are both referred to an STD clinic. Abs is shocked to find Simon has spent the night with Stella and ends up being replaced as best man by Jim, who has arranged to fly Simon to the venue in a small plane. While setting up for the wedding, Luke tells Claire he wants to be with her, not Bex. Bex overhears and she and Claire end up in a catfight. Abs accompanies Josh and Nina on a shout, where a man with a severed finger insists on staying to find his wedding ring. He goes to the venue and tells Lara of Simon's cheating. Harry arrives after changing his mind about attending and ends up driving Lara to the airport, where she has booked a one-way ticket to Australia. Lara rings Simon and he responds by trying to take drugs and causing the plane to crash. Jim gets clear but Simon is caught in the plane's explosion.

Guest starring Sara Hunter, Guy Masterson and Andrew Westfield