Obsessed with True Crime discussion

Hi all!
I'm looking for true crime books which focus in the psychology/behavior analysis aspect rather than the forensics. Any reccomendations?

Whoever Fights Monsters: My Twenty Years Tracking Serial Killers for the FBI, Alone With the Devil: Famous Cases of a Courtroom Psychiatrist are two good ones. Anything by John Douglas is likely to be up your alley. Oh, and Killing for Company: The Case of Dennis Nilsen.

Also look on our shelf here called Why, Why, Why. I've been putting all the books on criminal psychology under that heading. Feel free to add any others you're aware of! Two more that spring to mind are The Strange Case of Thomas Quick: The Swedish Serial Killer and the Psychoanalyst Who Created Him and the not-to-be-missed Hunting Humans: The Rise of the Modern Multiple Murderer. If you can find it, be sure to read The Two Assassins.