Whoever Fights Monsters: My Twenty Years Tracking Serial Killers for the FBI

Face-to-face with some of America's most terrifying killers, FBI veteran and ex-Army CID colonel Robert Ressler learned from them how to identify the unknown monsters who walk among us - and put them behind bars. Now the man who coined the phrase "serial killer" and advised Thomas Harris on Silence of the Lambs, shows how he is able to track down some of today's most brutal murderers.