Psychopathia Sexualis[2] is the eighth episode of ‘The Alienist.’ It premiered on Monday, March 12, 2018, at 9 p.m. ET/PT across TNT platforms.


Kreizler (Daniel Brühl) and Moore (Luke Evans) travel to Washington, D.C., Sara (Dakota Fanning) goes rogue in pursuit of the truth. Lucius (Matthew Shear) tells Marcus (Douglas Smith) a secret. Byrnes (Ted Levine) and Connor (David Wilmot) tighten their grip on the investigation. [2]

Cast Edit

Starring Edit

Guest StarringEdit


  • Art Burnett as Thomas Connor
  • Roderick Hill as Fishmonger
  • Corey Johnson as Hobart Weaver
  • Zeb Moore as Carriage Driver
  • Michael Glenn Murphy as Mr. Freewater
  • Christopher Naylor as Dr. Dillman
  • Jake Samuels as Horse Soldier
  • Nicola Stephenson as Maebh Connor
  • Jo Stone-Fewings as Ignatius Blunt
  • Ty Carter as Native American #1
  • Will Strongheart as Native American #2
  • Owen Good as Operator / Male
  • Skye Hallam as Prostitute
  • Roman Vasilyev as Missionary


Sara Howard: "Kreizler is on his way to Washington. He believes there may be some connection between our killer and the West."
John Moore: "We've found something. There was a massacre in New Paltz. Be careful."
Sara Howard: "Do you think it was an accident?"
Eliza: "His throat was cut from ear to ear."
Captain Miller: "you must be half-crazy to do what he did that day."
Marcus Isaacson: "What exactly did he do?"


Photo by Kata Vermes. [Courtesy of TNT Pressroom]

Photo by Kata Vermes. [Courtesy of TNT Pressroom]




  • The episode takes its name from Psychopathia Sexualis by Richard Freiherr von Krafft-Ebing. It is one of the first texts about sexual pathology, particularly noted for being one of the earliest studies on homosexuality, sadism, and masochism.
    • A copy of the book is featured in the third episode, Silver Smile, as one of Dr. Kreizler's textbooks.
  • The episode covers from Chapter Thirty-one to Chapter Thirty-five of Part III of Caleb Carr's novel, with some changes and additional original scenes.


  1. ‘The Alienist’ Crime Report
  2. 2.0 2.1 ‘The Alienist’ Episode Synopses on Turner Pressroom