John Douglas on chasing serial killers

Behavioral Analysis Unit introduction[Which include John Douglas,The FBI profiler]

JONBENET Grand Jury Asked to Speak To John Douglas - You'll Never Guess What One Juror Asked Him!

The real-life 'Mindhunter' reveals the most evil criminals he's interviewed | Your Morning

The Different Types Of Serial Killer | The FBI Files

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

John E. Douglas: Mindhunter