These Bloody Thoughts[2] is the fourth episode of ‘The Alienist.’ It premiered on Monday, February 12, 2018, at 9 p.m. ET/PT across TNT platforms.


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. [2]

Cast Edit

Starring Edit

Guest StarringEdit


  • Oliver Cater as Rosie
  • Eugenia Caruso as Mrs. Santorelli
  • Giovanni Scotti as Enzo Santorelli
  • Laurel Lefkow as Mrs. Isaacson
  • Kate Dickie as Scotch Ann
  • Max Fincham as Thomas
  • Amanda Hadingue as Mrs. Gorenko
  • Katherine Kingsley as Mrs. Williams
  • Ash Matthews as Charles Blythe
  • Roland Miskey as Ezra Mills
  • Tommy Rodger as Peter
  • Philip Rosch as Cahill
  • Klári Tolnai as Ruth
  • Fernanda Dorogi as Mother in Park
  • Francis McBurney as O'Rourke Bartender
  • Helena Albright as Young Park Girl #1
  • Heather Clementson as Young Park Girl #2
  • Peter Schueller as Crank Operator
  • Gábor Urmai as Dentis Patient
  • Béla Gados as Counter Clerk
  • Owen Good as Operator / Male
  • Harvey Weedon as Paresis Hall Boy #1
  • Gergely Káli as Flirty Young Man
  • David Z. Miller as Handsome Young Man


Lincoln Steffens: "Is it true that the dead boy was dressed as a girl, Commissioner Rosevelt?!"
Dr. Kreizler (to John Moore): "What we are missing, John, is not how he kills, but why and most importantly, when will he kill again?"


Photo by Kata Vermes and Jesse Giddings. [Courtesy of TNT Pressroom]

Photo by Kata Vermes and Jesse Giddings. [Courtesy of TNT Pressroom]



  • The episode covers from Chapter Sixteen to Chapter Twenty of Part II of Caleb Carr's novel, with several changes and additions of few original scenes.
  • The letter sent to Mrs. Santorelli by the killer is based on the letter that serial killer Albert Fish sent to his victim's mother. Fish was a child rapist and cannibal active in New York and neighbouring states between 1890 and 1930.


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