CNN Special Investigations Unit

Criminally Insane (2007x15)

Air date: Jul 14, 2007

Soledad O'Brien reports on criminally insane felons and why the warning signs in individuals are sometimes missed. Included are interviews with Lionel Dahmer, serial killer Jeffrey Dahmer's father; and David Kaczynski, brother of the Unabomber, Ted Kaczynski.