E1. The Boy on the Bridge: A young boy prostitute is butchered on the Williamsburg Bridge, alienist Laszlo Kreizler, newspaper illustrator John Moore, secretary Sara Howard & police commissioner Theodore Roosevelt investigate outside the law to find a serial killer.
E2. A Fruitful Partnership: Sara finds a clue and Kreizler tries to connect the evidence left behind by the serial killer. Kreizler takes Moore, Sara, Marcus and Lucius to Delmonico's in New York and informs them they're working together to catch the killer.
E3. Silver Smile: Use of the innovative new procedure of fingerprinting leads the team to discover crucial evidence is missing. Kriezler and Moore interview a witness to find out what happened to Moore at the brothel.
E4. These Bloody Thoughts: Kreizler (Daniel Brühl) and Sara (Dakota Fanning) discuss the capacity to kill. Moore (Luke Evans) goes on a date. Byrnes (Ted Levine) and Captain Connor (David Wilmot) keep an eye on a potential suspect. Roosevelt (Brian Geraghty) finds himself under public scrutiny.
E5. Hildebrandt's Starling: The team build a profile for the killer. Moore and Sara share an intimate moment. Kreizler gets advice from an old mentor. Roosevelt finally takes action.
E6. Ascension: The team hatches a plan to catch the killer. Moore checks in on a friend. Kreizler faces his own self-doubt about the investigation. Roosevelt attends an event with the city's elite. Sara looks into Kreizler's past. Connor acts on impulse.
E7. Many Sainted Men: Kreizler and Moore follow a lead. Sara visits a hospital and is forced to confront her past. Cyrus recovers from his injuries. Byrnes and Connor plot against the team. Detectives Marcus and Lucius Isaacson work on a clue.
E8. Psychopathia Sexualis: Kreizler and Moore travel to DC. Sara goes rogue in her pursuit of the truth. Lucius confides a secret to Marcus. Byrnes and Connor tighten their stranglehold on the investigation.
E9. Requiem: Kriezler mourns Mary's death while Sara pushes the team to forge ahead. Moore believes the killer is poised to strike again. Cyrus seeks revenge.
E10. Castle in the Sky: Kreizler confronts the demons of his past. Moore tell Sarah the truth. Conner takes matters into his own hands. The team closes in on the killer as time is running out.