He has hunted some of the most notorious and sadistic criminals of our time: The Trailside Killer in San Francisco, the Atlanta Child murderer. He has confronted, interviewed and researched dozens of serial killers and assassins, including Charles Manson, Richard Speck, John Wayne Gacy, and James Earl Ray - for a landmark study to understand their motives. To get inside their minds. He is Special Agent John Douglas, the model for law enforcement legend Jack Crawford in Thomas Harris' thrillers Red Dragon and The Silence of the Lambs, and the man who ushered in a new age in behavorial science and criminal profiling. Recently retired after twenty-five years of service, John Douglas can finally tell his unique and compelling story.

In the #1 "New York Times" bestseller "Mindhunter," John Douglas, who headed the FBI's elite Investigative Support Unit, told the story of his brilliant and terrifying career tracking down some of the most heinous criminals in history. Using behavioral profiling and criminal investigative analysis to get into the head and psyche of both the criminal and victim—to feel what they felt at the critical moment—Douglas helped crack many high profile cases, including the Trailside Killer, the Atlanta child murders, and the Tylenol murders. Now, working again with his co-author Mark Olshaker, Douglas delves further into the criminal mind with a series of chilling new cases in "Journey into Darkness": Follow the FBI's premier investigative profiler as he penetrates the minds and motives of the most terrifying serial killers. In "Journey into Darkness," Douglas profiles vicious serial killers, rapists, and child molesters. He is straightforward, blunt, often irreverent, and outspoken, but takes pains not to glorify any of these murderers.