Serial killers are not a new phenomenon, but what happens when the "average" person falls under the spell of a sadistic predator? Some of the most terrifying crimes in recent history have been committed by not one crazed killer, but a deadly duo.

In Most Evil clinical and forensic psychologist Dr. Kris Mohandie examines the criminal mind to decode a killer's motive, method and thought process. The goal is to come to a better understanding of why certain criminals behave in the ways that they do.

This hour-long series gives viewers a voyeuristic peek into the lust and animalistic obsession that have fueled some of the more brutal acts of violence to grab front-page headlines across the globe.

It's one thing to have your average bad date. But it's quite another to have the date from hell! Because when a date that was supposed to be fun, flirtatious and enjoyable turns into a total nightmare that can impact your life permanently (even fatally).

True Crime with Aphrodite Jones follows one of the nation's top crime writers -- Aphrodite Jones -- as she goes behind the scenes of famous murder cases to uncover hidden secrets and new information to shed new light on these sensational stories.

Jealousy, deception and betrayal: it's the perfect recipe that can push a loving wife over the edge and put her spouse on the receiving end of a sharp blade.

'Stalked: Someone's Watching' follows the dramatic, emotional stories of stalking victims and the twisted psychology of the people who relentlessly pursue them.

Stories of men and women who thought they were happily married, until the day they uncovered a shocking secret about their spouse that would leave them asking Who the (BLEEP) Did I Marry?

See No Evil reveals how the deadliest crimes are solved by the only witnesses that never lie - and where murderers have no place to hide: surveillance cameras.

Betrayed follows the lives of normal people who don't realize their days are numbered. The clock ticks on their lives, as family, friends, and lovers start to reveal hidden jealousies and wicked secrets, all leading to the ultimate betrayal murder.

Spite, greed, backstabbing and betrayal. When marriages fall apart, divorce can turn ugly...even deadly. Fatal Vows is a documentary series that explores tumultuous, shocking and high-stake divorces and the deadly murders linked to them.

IN PURSUIT WITH JOHN WALSH carries forward John Walsh’s lifelong mission of tracking down fugitives from justice, finding missing children, and empowering the public to help support a more effective and accountable criminal justice system.

Calculating. Cunning. Cold as ice. In Diabolical, a new gripping ten-episode series on Investigation Discovery, these shockingly devious masterminds use their wits and wiles to manipulate us, seduce us and try to get away with murder.

What if the person closest to you...were a devil in disguise? Evil Lives Here tells the true stories of people who lived with a killer. How well do you really know your family? Would you recognize the warning signs? Or would you become entangled in evil?

Serial killers are not a new phenomenon, but what happens when the "average" person falls under the spell of a sadistic predator? Some of the most terrifying crimes in recent history have been committed by not one crazed killer, but a deadly duo.

Jealousy, deception and betrayal: it's the perfect recipe that can push a loving wife over the edge and put her spouse on the receiving end of a sharp blade.

Homicide investigations unfold through dramatic real footage in this groundbreaking series. The series provides an up-close perspective of the case, including footage from bodycam at the crime scene, surveillance video, and interrogation room video.

Nightmare Next Door is a true crime show that peels back the peaceful facade of small town America and exposes the dark secrets hidden behind its white-washed picket fences.

This series features hour-long stand-alone episodes that tell tales of Lake Erie's haunting and fascinating murders and mysteries -- reminding viewers that when it comes to Lake Erie, there is something about the water.

'Stalked: Someone's Watching' follows the dramatic, emotional stories of stalking victims and the twisted psychology of the people who relentlessly pursue them.

In 1997 a shocking story made headlines. Thomas Hicks, a small town Georgia doctor, illegally sold more than 200 babies from the back door of his clinic. Jane Blasio has been trying to uncover the mysteries of the Hicks clinic for over 30 years. She is joined by Lisa Joyner and C

In New Hampshire, Conservation Officers of New Hampshire Fish and Game who work tirelessly to preserve and protect the natural resources of the Granite State. They are on call 24/7, responding to life and death situations in order to protect the public.

Josh Gates has decided it's time to really explore the dark side of our world. To this end, Gates has put together a team to undertake investigations delving into realms beyond the 'unknown.' He's picked Michelle Tate and Phil Torres to mount unprecedented expeditions into the un

Tia Maria Torres is a woman with a cause - to rescue, rehabilitate and rehome more than 300 pit bulls at one of the country's largest animal rescues, Villalobos Rescue Center in New Orleans.

From our Sister Network TLC: Dr. Sandra Lee isn’t just one of America’s top dermatologists; she’s an Instagram and YouTube celebrity who has pioneered the fastest growing medical fascination in decades.