Cast of The Alienist

Daniel Brühl portrays the character Laszlo Kreizler in The Alienist. Dr. Laszlo Kreizler is a brilliant and pioneering criminal psychologist, often referred to as an 'alienist,' which was the term given to early forensic psychologists. He is determined to unravel the mind of a serial killer by studying the psychological motives behind the gruesome murders.

Luke Evans plays the character of John Moore in The Alienist. John Moore is a newspaper illustrator and a close friend of Dr. Kreizler. He becomes fascinated with the investigation and joins forces with Kreizler to solve the horrific crimes.

Dakota Fanning portrays the character Sara Howard in The Alienist. Sara Howard is a headstrong and ambitious secretary in the New York City Police Department. Despite the limitations placed on women in the 19th century, she aspires to become the first female police detective and joins Dr. Kreizler and John Moore in their investigation.

Matthew Shear plays the character Lucius Isaacson in The Alienist. Lucius Isaacson works as a police department illustrator. He assists Dr. Kreizler and his team in the investigation by gathering visual evidence and creating sketches of crime scenes. He is also the brother of Marcus Isaacson.

Brian Geraghty portrays the character Theodore Roosevelt in The Alienist. Theodore Roosevelt is the police commissioner of New York City and is known for his progressive and reformist ideas. He supports Dr. Kreizler and his team in their unconventional methods, providing them with resources and access to restricted information.

Douglas Smith plays the character Marcus Isaacson in The Alienist. Marcus Isaacson works alongside his brother Lucius as a police department illustrator. He is skilled in using emerging forensic techniques, such as fingerprint analysis and bloodstain pattern analysis, to aid in the investigation.

Robert Wisdom portrays the character Cyrus Montrose in The Alienist. Cyrus Montrose is a trusted ally of Dr. Kreizler. He serves as Kreizler's bodyguard and driver, and his past connections to the criminal underworld prove valuable in the investigation.

Rosy McEwen plays the character Libby Hatch in The Alienist. Libby Hatch is an enigmatic and troubled woman who becomes entangled in the investigation. Her complex relationship with the killer holds vital clues that help Dr. Kreizler and his team understand the murderer's motives.