John Colter: King of the Mountain Men

In the City of Angels, everyone is striving for the unattainable high life, and some are willing to kill for it. Encompassing everything from beach communities like Venice and Malibu to the wealth of Beverly Hills and hip enclaves like Thai Town and Highland Park, Real Murders of Los Angeles exposes the dark underbelly of the city's glamorous façade. Follow the stories of those whose lust for fame and fortune led them to commit salacious, sinful, and scandalous murders.

Cheyenne Bodie was a big man, a former army scout who went west after the American Civil War and drifted from job to job, here a cowboy, there a lawman, and always a larger-than-life hero. CHEYENNE is an American western television series of 108 black-and-white episodes broadcast on ABC from 1955 to 1963. The show was the first hour-long western, and in fact the first hour-long dramatic series of any kind, with continuing characters, to last more than one season. It was also the first series to be made by a major Hollywood film studio which did not derive from its established film properties, and the first of a long chain of Warner Brothers original series produced by William T. Orr.

Disturbing cases of individuals who murder their own best friends and examination of the different factors that drove them to commit this heinous crime.

This extension of the long-running true-crime series 'Snapped' shifts the focus to couples whose passion drives them to commit terrible criminal acts. Using re-creations and gripping firsthand accounts, each episode takes a deep dive into a case, telling the story of the couple's romance, how the relationship evolved from love to manipulation, and what ultimately drove the couple to commit the crime.

Cellmate Secrets revisits some of the most infamous stories of headline-grabbing criminals. Actress Angie Harmon narrates the series, which reveals new insights and information as former friends, guards, cellmates and lovers give first-hand accounts of their time with the famed felons and defendants.

Most relationships have secrets, but what if the lies are huge – will the relationship be destroyed forever? Each episode of this hourlong series tells two stories, based on actual events, in which lies lead to consequences for the people involved. Family secrets and personal betrayal are often at the center of the situations that lead to explosive confrontations and, eventually, attempts at making amends. Dramatic re-creations bring the stories to life.

Southern Fried Homicide probes the juiciest stories from down in the Bible Belt. Classic true crime is served up against a backdrop of Southern hospitality, etiquette and Christian values. Good ol' morals give way to cold-blooded murder in these grim tales of love gone wrong, business deals turned sour, families divided, and more.

Caitlyn Jenner's first public appearance since her transition included making an impassioned, heartfelt speech at the ESPY Awards about the need for understanding transgender issues and "accepting people for who they are." For her part, Caitlyn -- formerly known as Bruce Jenner -- eagerly welcomes the responsibility to educate people. Follow Caitlyn Jenner's life as a transgender woman, telling her intimate story as she seeks out her "new normal," while offering a better understanding of many of life's challenges. Most of all, Caitlyn looks forward to living for the first time as the person she feels she was born to be. The docu-series also explores what her transition means for the people closest to her, including her children and stepchildren, and how those relationships are affected.

Whether it's a cheating ex, a double-crossing co-worker, or the best friend who stabbed you in the back, it's human instinct to want to get even. Though most people don't act on this impulse, there are those who are consumed with getting even. For them, what starts as a nagging bitterness evolves into obsession and results in murder. This true crime documentary series profiles those stories of revenge, told through gripping interviews with the family members, community members, and law enforcement who experienced the events firsthand.

Relentless sheriffs, trigger-happy gunslingers, steadfast saloon owners and cocky cowboys are all found in the "Lucky Luke" albums, which have influenced entire generations of comic readers. For the three-part series "In the boots of Lucky Luke", the French comic author Jul traveled to the USA to trace the role models of the familiar comic characters.

"The Perfect Murder" brings viewers some of the most diabolical, perplexing murder cases to land on detectives’ desks – the kind of cases that make or break careers and provide fodder for Hollywood mystery movies. These ingenious killers are every detective’s worst nightmare. Whether by planting false evidence, or writing anonymous letters to police, these murderers will stop at nothing to stay one step ahead and get away with the perfect murder. Detectives hit dead end after dead end, and wrong suspects are discarded. But one new clue can lead to another and the cold case suddenly gets hot. The truth is that it is the perfect murder -- until it's not.

A series of reports chosen by "Dateline" correspondents that answers the question they most often get asked — what their most memorable story is and why.

This true-crime series details the fascination with Christina Boyer. Boyer became a household name for her telekinesis as a teenager and the alleged murder of her own infant daughter in Boyer’s early 20s, a crime she maintains she did not commit. The series details the unlikely band of amateur sleuths obsessed with setting her free.

When it comes to murder, no detective starts their search at the beginning of the crime. Rather, a murder investigation always begins with the body, after the deed is done. It is up to the police to piece together the story, moving backwards in time until they arrive at the root of the crime. In REDRUM, viewers follow the backwards tale of murder from false motives and mistaken witnesses to conversations taken completely out of context, until the truth finally comes out at the very end.

Investigating a murder is hard enough. But when detectives realize the killer knows how to stage a crime scene to throw them off, the job gets even more difficult. They’re hunting down criminals who are sworn to protect and serve -- killers with a badge.

Pull back the curtain on bizarre double lives and see the real stories of men and women who thought they were happily married, until the day they uncovered a shocking secret about their spouse leading them to wonder who it is they really fell in love with.