The Alienist (TV series)

• Daniel Brühl as Laszlo Kreizler,[7] an alienist (or psychiatrist)[8] who has focused recently on children suffering from mental illnesses, called upon by his former Harvard classmate Theodore Roosevelt to try to understand the psychology behind grisly child murders. He is Hungarian and comes from a well-off family. He lives alone save for his maid, valet, and stable boy. He has a lame arm, and frequently seeks out the insight of former patients and criminals for help with his investigations and research.
• Luke Evans as John Schuyler Moore,[7] a New York Times cartoonist and illustrator, as well as a society man who attended Harvard with Kreizler and Roosevelt. He lives with his grandmother, and is estranged from his father following the drowning death of his brother. He is handsome and charming, but is an alcoholic and frequenter of brothels, and remains unmarried after his fiancée left him for another man. Like Roosevelt, he has known Sara since she was young.
• Brian Geraghty as Theodore Roosevelt (season 1),[9] the newly-appointed commissioner of the NYPD. He is portrayed as commanding respect from certain people, but remains malleable by society's most venerable as well as veteran NYPD officers. He attended Harvard with Kreizler and Moore, both of whom he calls upon to mount a secret, parallel investigation into the child murders. He employs Sara Howard as his secretary, having known her father, and thinks highly of her.
• Robert Ray Wisdom as Cyrus Montrose,[10] Kreizler's valet whom he employed after testifying on Cyrus' behalf during a murder trial
• Douglas Smith as Marcus Isaacson [11] a young Jewish detective sergeant with the NYPD whom Roosevelt enlists to work with Kreizler, Moore, and Howard. He is Lucius' twin brother, and like his brother, is well versed in science and general crime scene investigation. He becomes involved with a Jewish socialist.
• Matthew Shear as Lucius Isaacson,[12] Marcus' twin brother and another detective sergeant with the NYPD. He is much more cautious and restrained than Marcus, and eager to utilize the latest scientific techniques to solve crimes.
• Q'orianka Kilcher as Mary Palmer (season 1),[10] Kreizler's maid. Like Cyrus, she was taken in by Kreizler after she was acquitted for murder. She is mute and uses sign language to communicate, and has an affection for Kreizler.
• Matt Lintz (season 1) and Dominic Herman-Day (season 2) as Stevie Taggert,[13] a youthful ward and stable boy of Kreizler's who often assists Cyrus, and gets involved in the team's investigation
• Dakota Fanning as Sara Howard,[14] a young society woman who becomes Roosevelt's secretary and the first woman employed by the NYPD. She spent time in a sanitarium after the death of her father, whom Roosevelt and Moore both knew. She is composed and determined to not allow her male colleagues to disparage her. She gets involved with the team as a liaison between Roosevelt and Kreizler and Moore. By the start of the second season, she has left the NYPD and opened her own private detective agency. The character is loosely based upon the story of Isabella Goodwin, New York's first female detective.[15]
• Rosy McEwen as Libby Hatch (season 2),[16] a young nurse at the Lying In Hospital
• Melanie Field as Bitsy Sussman (season 2),[16] Sara's assistant at the detective agency

• Ted Levine as Thomas F. Byrnes,[11] a retired police chief who steers Connor toward protecting the rich and wealthy from being persecuted for their crimes and indiscretions
• Martin McCreadie as Doyle, a police sergeant who works with Connor and is promoted to captain following Connor's departure from the NYPD

• David Wilmot as Captain Connor,[17] an Irish police officer who dislikes Roosevelt and who tries to subvert the team's investigations at every possible turn
• Antonio Magro as Paul Kelly,[18] a mobster who runs a brothel frequented by high society men
• Jackson Gann as Joseph,[19] a young boy who works at a brothel and who endears himself to Moore
• Michael Ironside as J.P. Morgan, a financier and banker. He uses Connor and Byrnes as his muscle to enforce protecting his fellow members of high society.
• Sean Young as Mrs. Van Bergen, the matriarch of the fictional van Bergen family. She is generally unperturbed by rumors about her son's actions, but nonetheless is compelled by Byrnes to take action to protect him.
• Josef Altin as Willem Van Bergen, a young man who preys on prepubescent boys. He suffers from syphilis.
• Peter McRobbie as William Lafayette Strong, the mayor of New York City from 1895 to 1897. He echoes Morgan and Byrnes' concerns for the city's upper crust.
• Bill Heck as John Beechum, a former Plains resident now living in New York

• Matt Letscher as William Randolph Hearst
• Michael McElhatton as Dr. Markoe, director of the Lying In Hospital
• Heather Goldenhersh as Matron, the head nurse at the Lying In Hospital
• Emily Barber as Violet Hayward, John's fiancee, who is Hearst's goddaughter
• Bruna Cusí as Señora Isabella Linares, the Spanish mother of a missing baby
• Brittany Marie Batchelder as Joanna Crawford, Cyrus's niece, a trained reporter who runs a seedy bar
• Georgia Lowe as Milly, another assistant to Sara at the agency
• Diego Martín as Narciso Linares, the Spanish ambassador-general
• Demetri Goritsas as Bernie Peterson, John's editor at the New York Times
• Frederick Schmidt as Goo Goo Knox, a street criminal who is Libby's lover
• Lara Pulver as Karen Stratten, a professor of psychology with interests similar to Kreizler's
• Gavin O'Connor as Murphy, a detective at the NYPD

In April 2015, it was reported that Paramount Television would adapt The Alienist as an event television series in partnership with Anonymous Content. Paramount also announced that Eric Roth had come on board the project as an executive producer, as had Hossein Amini as both writer for the series and executive producer. It also announced that Cary Fukunaga would direct all the episodes and serve as an executive producer.[20]

In May 2015, it was reported that TNT had made a deal to produce the series at $5 million per episode.[21] In July 2015, writer and director John Sayles announced on his blog that he was joining the series as a writer.[22] On July 21, 2015, Caleb Carr made an announcement that he was coming on board the series as a consulting producer.[23]

In September 2016, director Jakob Verbruggen replaced Fukunaga as director due to scheduling conflicts, though Fukunaga remained an executive producer.[24]

On November 28, 2016, it was reported that Daniel Brühl was cast as Dr. Laszlo Kreizler and Luke Evans as John Moore.[7] Dakota Fanning was later cast as Sara Howard on January 14, 2017.[14] On February 8, 2017, it was reported that Robert Wisdom was cast as Cyrus Montrose and Q'orianka Kilcher as Mary Palmer.[10] Matt Lintz was cast as Stevie Taggert on February 15, 2017.[13] On February 17, 2017, it was reported that Matthew Shear joined the cast as Lucius Isaacson.[12] Douglas Smith was cast as Marcus Isaacson and Ted Levine as Thomas F. Byrnes on February 28, 2017.[11] It was reported that Emanuela Postacchini was cast as Flora on March 17, 2017.[25] On April 19, 2017, it was reported that Brian Geraghty was cast as Theodore Roosevelt.[9]

On review aggregator Rotten Tomatoes, the first season has an approval rating of 67% based on 78 reviews, with an average rating of 6.86/10; the site's consensuses states, "The Alienist boasts an impressive cast and superb production design, but a sluggish pace and too many tropes keep it from truly standing out in an overcrowded genre."[44] On Metacritic, the first season has a weighted average score of 61 out of 100, based on 26 critics, indicating "generally favorable reviews".[45]

In the second season, Rotten Tomatoes has an approval rating of 81% based on 16 reviews, with an average rating of 7.03/10; the site's consensuses states, "Tense and thrilling, if not terribly distinct, Angel of Darkness takes The Alienist in a darker direction while giving the superb Dakota Fanning more time to shine."[46] On Metacritic, the second season has a weighted average score of 55 out of 100, based on 5 critics, indicating "mixed or average reviews".[47]