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.

Former CNN/HLN anchor and veteran broadcast journalist Susan Hendricks takes an investigative deep-dive into the still-unsolved double homicide of two teens in Delphi, Indiana—and its lasting impact on the community. In Down the Hill, Hendricks digs deeper in into the mystery that has captivated our nation for years, exploring the family's enduring resilience and advocacy, as well as the rippling impact the case has had on not just Delphi, but the very heart of the American heartland.

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.

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.

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.

An account of the crimes of Arthur Shawcross describes how the paroled child killer shot, stabbed, suffocated, and strangled 16 Rochester, New York, prostitutes and examines how the legal system failed his victims.

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.

Ann Rule was working on the biggest story of her career, tracking the trail of victims left by a brutal serial killer. Little did this future best-selling author know that the savage slayer she was hunting was the young man she counted among her closest friends. Everyone's picture of a natural winner, Ted Bundy was a bright, charming, and handsome man with a promising future as an attorney. But on January 24, 1989 Bundy was executed for the murders of three young women - and had confessed to taking the lives of at least thirty-five more women from coast to coast.

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.

In February 1990, Oregon State Police arrested John Sosnovke and Laverne Pavlinac for the vicious rape and murder of Taunja Bennet. Pavlinac had come forth and confessed, implicating her boyfriend and producing physical evidence that linked them to the crime. Authorities closed the case. There was just one problem. They had the wrong people. And the real killer wasn't about to let anyone take credit for his kill.

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.

Barbara Butcher was early in her recovery from alcoholism when she found an unexpected lifeline: a job at the Medical Examiner’s Office in New York City. The second woman ever hired for the role of Death Investigator in Manhattan, she was the first to last more than three months. The work was gritty, demanding, morbid, and sometimes dangerous—and she loved it. In What the Dead Know, she writes with the kind of New York attitude and bravado you might expect from decades in the field, investigating more than 5,500 death scenes, 680 of which were homicides.

In November 1987, a young couple on an overnight trip to Seattle vanished without a trace. A week later, the bodies of Tanya Van Cuylenborg and her boyfriend Jay Cook were found in rural Washington. It was a brutal crime, and it was the perfect crime: With few clues and no witnesses, an international manhunt turned up empty, and the sensational case that shocked the Pacific Northwest gradually slipped from the headlines.

In 2000, Douglas Preston and his family moved to Florence, Italy, fulfilling a long-held dream. They put their children in Italian schools and settled into a 14th century farmhouse in the green hills of Florence, where they devoted themselves to living la dolce vita while Preston wrote his best-selling suspense novels. All that changed when he discovered that the lovely olive grove in front of their house had been the scene of a double-murder.

In May 1971, Pam Jackson and Sherri Miller were two seventeen-year-olds driving to an end-of-the-school-year party in a rundown Studebaker Lark, when they seemingly disappeared off the face of the earth. Police back then didn't do enough to try and find them. Investigators thirty years later did too much. Two families endure decades of pain as they await answers of what happened to their girls. When a third family is pulled into the mystery, they quickly learn their nightmare is just beginning.