On February 13, 2017, two Indiana teenagers, Abigail Williams, 13, and Liberty German, 14, went for a walk in the woods near the abandoned Monon High Bridge. They never returned home.

Lurking beneath the progressive activism and sex positivity in the 1970 to '80s, a dark undercurrent of violence rippled across the American landscape. With reported cases of sexual assault and homicide on the rise, the FBI created a specialized team - the “Mindhunters”, better known as the Behavioral Science Unit - to track down the country's most dangerous criminals. And yet narrowing down a seemingly infinite list of potential suspects seemed daunting at best and impossible at worst - until Dr. Ann Wolbert Burgess stepped on the scene.

Bonus material! Includes an excerpt from John Douglas and Mark Olshaker’s Obsession! Discover the classic behind-the-scenes chronicle of John E. Douglas’ 25-year career in the FBI Investigative Support Unit, where he used psychological profiling to delve into the minds of the country’s most notorious serial killers and criminals - the basis for the upcoming Netflix original series.

Twenty-two years in the FBI, 16 of them as a member of the Bureau's Behavioral Science Unit. Roy Hazelwood, like many investigators, has seen it all. But unlike most, he's gone further into the dark and twisted psyches of serial killers and sadistic sexual offenders and has emerged as one of the world's foremost experts on the sexual criminal. Acclaimed true-crime writer Stephen G. Michaud takes you into the heart of Hazelwood's work through dozens of startling cases, including those of the Lonely Heart Killer, the "Ken and Barbie" killings, and the Atlanta Child Murders.

In 1974, Dennis Lynn Rader stalked and murdered a family of four in Wichita, Kansas. Since adolescence, he had read about serial killers and imagined becoming one. Soon after killing the family, he murdered a young woman and then another, until he had 10 victims. He named himself “B.T.K.” (bind, torture, kill) and wrote notes that terrorized the city. He remained on the loose for 30 years.

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 The Silence of the Lambs shows how he has tracked down some of the nation's most brutal murderers. Join Ressler as he takes you on the hunt for America's most dangerous psychopaths. It is a terrifying journey you will not forget.

In the number-one New York Times best seller 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. Now, 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.

I order another bourbon, neat. This is the drink that will flip the switch. I don’t even know how I got here, to this place, to this point. Something is happening to me lately. I’m drinking too much. My sheets are soaking wet when I wake up from nightmares of decaying corpses. I order another drink and swig it, trying to forget about the latest case I can’t shake. Crime solving for me is more complex than the challenge of the hunt, or the process of piecing together a scientific puzzle. The thought of good people suffering drives me to the point of obsession.

Profiler Roy Hazelwood is one of the world's leading experts on the strangest and most dangerous of all aberrant offenders - the sexual criminal. In Dark Dreams he reveals the twisted motive and thinking that go into the most reprehensible crimes. He also catalogs the innovative and remarkably effective techniques that allow law enforcement agents to construct psychological profiles of the offenders who commit these crimes.

On November 15, 1959, in the small town of Holcomb, Kansas, four members of the Clutter family were savagely murdered by blasts from a shotgun held a few inches from their faces. There was no apparent motive for the crime, and there were almost no clues.

Joe Kenda investigated 387 murder cases during his 23 years with the Colorado Springs Police Department and solved almost all of them. And he is ready to detail the cases that are too gruesome to air on television, cases that still haunt him, and the few cases where the killer got away. These cases are horrifyingly real, and the detail is so mesmerizing you won't be able to turn it off.

In the most extraordinary journey Ann Rule has ever undertaken, America's master of true crime has spent more than two decades researching the story of the Green River Killer, who murdered more than 49 young women. Green River, Running Red is a harrowing account of a modern monster, a killer who walked among us undetected. It is also the story of his quarry -- of who these young women were and who they might have become.

John Douglas once again takes us fascinatingly behind the scenes, focusing his expertise on predatory crimes, primarily against women. With a deep sense of compassion for the victims and an uncanny understanding of the perpetrators, Douglas looks at the obsessions that lead to rape, stalking, and sexual murder through such cases as Ronnie Shelton, the serial rapist who terrorized Cleveland; and New York's notorious "Preppie Murder". But Douglas also looks at obsession on the other side of the moral spectrum: his own career-long obsession with hunting these predators.

One late spring evening in 2010, Shannan Gilbert—after running through the oceanfront community of Oak Beach screaming for her life—went missing. No one who had heard of her disappearance thought much about what had happened to the twenty-four-year-old: she was a Craigslist escort who had been fleeing a scene—of what, no one could be sure. The Suffolk County police, too, seemed to have paid little attention—until seven months later, when an unexpected discovery in a bramble alongside a nearby highway turned up four bodies, all evenly spaced, all wrapped in burlap. But none of them Shannan’s.

In and out of hospitals since birth, angelic nine-month-old Morgan Reid finally succumbed to what appeared to be sudden infant death syndrome. Morgan's Texas-born mother, Tanya, a nurse and devoted wife, pulled up stakes with her grieving husband, Jim, and moved on. It was the best way to put the past behind them. Until their son, Michael, a boy who by all accounts was terrified of his mother, began showing signs of the same affliction that stole the life of his baby sister....