John Douglas on chasing serial killers

The Minds Behind Mindhunter

At 81, Former FBI "Mindhunter" John Douglas Reveals the 5 Killers Who Still Haunt Him

The Different Types Of Serial Killer | The FBI Files

Interview with John Douglas, Author of "The Killer Across the Table"

Know Their Motive | John Douglas Teaches How to Think Like an FBI Profiler | MasterClass

Donald Harvey interviewed by Criminal Profiler John Douglas (MSNBC)