The team learns more about the killer. Moore (Luke Evans) and Sara (Dakota Fanning) share an intimate moment. Kreizler (Daniel Brühl) seeks advice from an old mentor. Roosevelt (Brian Geraghty) takes action. 
- Miss Howard: "I'm to inform you the police have a suspect. He comes from wealth and privilege."
- Dr. Kreizler: "You asked my help and provide you with a name and I've done so. Now that's all?"
- Roosevelt: "I almost believe you don't want the killer found."
- Dr. Kreizler: "It's time to take action."
- Dr. Kreizler: "Hello, Jesse. Do you remember me? "
- The episode covers from Chapter Twenty-One to Chapter Twenty-Four of Part II from Caleb Carr's novel, with several changes and additional original scenes.
- The title of the episode refers to a conversation between Dr. Kreizler and his mentor, Professor Cavanaugh.