Troubled Blood

Troubled Blood begins in August 2013 and ends on Robin's 30th birthday on 9 October 2014. While visiting his terminally ill aunt Joan in Cornwall, Strike is approached by a woman who wants to hire Strike's firm to investigate the disappearance of her mother, Margot Bamborough, a general practitioner in London, almost 40 years previously, on 11 October 1974. As a result of their previous successes, Strike and Robin (still a salaried partner) now employ three contract investigators and an office manager. Both are dealing with their own irritations: Strike over his aunt's illness, suicide threats from his ex-fiancee Charlotte (now a married mother of two), and the attempts of his half-siblings to get him to attend a party honoring his rock star biological father Johnny Rokeby; Robin over Matthew's intransigence in their divorce, her continuing PTSD, and her unsettled personal life, brought into clearer focus by her brother and his wife having their first child.

The police's principal suspect in Margot's disappearance was a currently incarcerated serial killer named Dennis Creed. The daughter (Anna) and her wife give the firm a one-year contract to try to trace information, although, because the small firm has three other ongoing cases, it takes several months to run down the surviving witnesses and investigators (or their children). During the year, Strike's aunt dies from cancer, Matthew grants Robin the divorce because his mistress/girlfriend becomes pregnant, Charlotte attempts suicide and calls Strike to tell him goodbye—although Strike's quick reaction gets help to her in time, and the heavy work schedule combined with a lack of communication about all of the issues contributes to many personal misunderstandings within the firm, including arguments between Strike and Robin and the termination of one of the contract investigators for instances of inappropriate behaviour toward Robin.

In August 2014, although the firm is still trying to trace leads, the client and her wife end the contract as of the end of August, two weeks before the allotted year. Despite this, Strike and Robin continue to investigate. There are three breakthroughs with the case: Strike locates an elusive patient of Margot’s, Steve Douthwaite; a receptionist, who claims she was the last person to see Margot alive, agrees to speak to Strike and Robin; and, through Robin’s inventiveness and persistence in attempting to secure an interview with Creed behind Strike’s back, Strike is granted permission to interrogate Creed in Broadmoor Hospital on 14 September. Strike outwits Creed and this leads to the discovery of the remains of another victim of Creed, Louise Tucker, bringing closure and relief to her father. Robin and Strike then use evidence from the original police investigation and their subsequent investigation to find Margot's body and identify her killer: Janice Beattie, a nurse who worked for Margot's practice. Margot had (correctly) begun to suspect Janice had been poisoning Steve Douthwaite and was implicated in the apparent suicide of Douthwaite’s lover. Strike deduces that Janice is a serial-killer, who has murdered many more victims over decades. An avalanche of publicity follows the discovery of the remains of Louise Tucker and Margot Bamborough, and the arrest of Janice Beattie. Robin and Strike both move out of their homes temporarily to avoid journalists. The novel ends on Robin’s 30th birthday, with Strike (in contrast to the generic last-minute gifts he gave Robin at Christmas and on her previous birthday) buying Robin thoughtful and personalised gifts and taking her to the Ritz for champagne; enigmatically, Strike smiles to himself as he remembers a conversation with a friend about the competing demands of career, romantic relationships and marriage.

Speaking after the release of the novel, Rowling described its main themes as "change, loss and absence" and that the book examines the "changing face of feminism". She also stated that the character of Dennis Creed was loosely based on real-life killers Jerry Brudos and Russell Williams.[4][5]

Troubled Blood sold 64,633 copies in its first week and was the top selling book in the UK. This was the biggest single week of sales for any Galbraith title and almost double the launch-week volume of the previous Strike Lethal White.[6] It retained the number one spot in its second week on sale, selling a further 25,430 copies.[7]

In The Daily Telegraph, the reviewer Jake Kerridge complimented the novel's character development and pleasant reading, while finding it unnecessarily long and less exciting than previous books of the series.[2] Clare Clark, writing for The Guardian, gave the novel a positive review, pointing out its plot full of "simmering emotional tension" and "terrific fun", while acknowledging that it was excessively long and "hardly a hair-raising ride".[1] Joan Smith in The Sunday Times said "the story is injected with a powerful sense of urgency...in this magnificent addition to the Strike novels". Tom Nolan, from The Wall Street Journal, deemed it "a formidable entertainment from the first page to the last".[8] Kelly Lawler, reviewing for USA Today, called the novel a "laborious read" and "simply not good", paling in comparison to previous books in the series.[9] Stephen King praised the novel, calling Rowling "a wonderful storyteller and a gifted stylist".[10]

Some media outlets observed that the inclusion of a male villain who dresses as a woman in order to kill women was bound to be ill-received by part of the public, given the author's past comments on transgender people that were considered transphobic by some.[3][9][11][12][13][14] Laura Bradley, reviewing in The Daily Beast, claimed "pernicious anti-trans tropes"[15] in the novel, while Kerridge observed that the book's "moral seems to be: never trust a man in a dress".[2]

Nick Cohen, writing for The Spectator, argued that the transphobia accusations were baseless and slanderous, noting that Dennis Creed is investigated along with a dozen other suspects. He also stated that the book does not engage in the politics of women-only spaces and access to gender reassignment treatments.[16] Alison Flood, writing for The Guardian, expressed similar views, arguing that people who have not read the book were making wrong assumptions based on a single review.[17]