The killer in front of me Who are these predators?

Used book in very good condition

How do you recognize a predatory mind? What drives a criminal to act? Are we born with murderous impulses or are they due to external circumstances? What
do we feel before taking action?
After studying and interviewing the greatest serial killers for over 25 years, John Douglas is able to anticipate their actions, even to push them to confess.
In The Killer in Front of Me, the famous FBI profiler reveals his methods through interviews with four of the greatest murderers of our time. By revisiting these cases, he gives us a glimpse, at the heart of evil, of the human being in all his complexity.