After the killing of Greg Williams, his wife, Michele, tells two different stories about how it happened; she changes her story yet again while being interviewed on a TV newsmagazine.

David Camm's conviction of killing his family.

The Los Angeles Police Department says Sherri Rasmussen was killed during a botched robbery, but they arrest Detective Stephanie Lazarus for the crime years later, making people wonder if the LAPD had been protecting one of their own all along.

When motivational speaker Jeffrey Locker is found dead in his car in a bad New York neighborhood, the police have some theories but soon discover a motive they never expected to find.

More than a decade after Michael Skakel is convicted of murdering 15-year-old Martha Moxley, his brothers and cousin, Robert F. Kennedy Jr., lobby for him to get a new trial.

Posing as a photographer, serial killer Bill Bradford uses his camera to ensnare young women and is sent to death row for murdering two victims even though he claims to have killed many more.

While there is no forensic evidence tying Steven DeMocker to the brutal murder of his ex-wife, Carol Kennedy, prosecutors believe they can convict him with a strong circumstantial case.

More familiar with liquor-law violations than violent crimes, a detective joins the cold-case squad and investigates the 20-year-old murder of Amy Weidner.

When Jason Bohn is charged with murdering girlfriend Danielle Thomas, his lawyers argue he suffers from a behavioral disorder which is characterized by uncontrollable outbursts of anger.

When Uta von Schwedler is found dead in a bathtub, her teenage son, Pelle Wall, embarks on a mission to make sure his father, Johnny Wall, is held accountable for her murder.

Police suspect Kelee Davidson is behind the murder of her former husband, Jarrod, then the investigation takes a turn when the evidence points to her parents.

When 37-year-old Sandra Rozzo is shot to death in her home in Pinellas Park, Fla., ex-boyfriend Tracey Humphrey has both a rock-solid alibi and a new bride.

When David Harmon is bludgeoned to death, investigators use new technology to build a case against his wife, Melinda, and her boyfriend, Mark Mangelsdorf.

In 2004, Charlie Brandt and his wife, Teri, seek refuge from a hurricane in the Orlando, Fla., home of a niece, then all three are found dead in an apparent murder-suicide, which prompts investigators to dig up a dark family secret.

When actress Juliana Redding is found strangled to death in her Santa Monica home, her case turns out to be difficult to solve.

When Sheila Bellush is shot to death, police suspect she is the victim of a murder-for-hire plot orchestrated by her ex-husband, Allen Blackthorne.

After aspiring actress Ashley Barnett dies while on a three-day party cruise, her mother searches for answers; George Smith disappears on his honeymoon cruise.

When college professor Stephanie Sims vanishes from her Louisiana home, police come to suspect the smooth-talking golf professional, Wayne Guidry Jr., with whom she has been living, of murder.

Devout Mormon Faylene Grant records having visions of her imminent death; her husband, Doug, then finds her lifeless body in the bathtub of their home.

A man claims his wife fell from a cliff into Colorado's Cottonwood Creek while hiking, but authorities claim it was murder.

Joan Porco recants after indicating that her son, Christopher, is responsible for the savage attack with an ax that claimed her husband's life, and she begs investigators to leave Christopher alone.

This newsmagazine investigates intriguing crime and justice cases that touch on all aspects of the human experience. Over its long run, the show has helped exonerate wrongly convicted people, driven the reopening -- and resolution -- of cold cases, and changed numerous lives. CBS News correspondents offer an in-depth look into each story, with the emphasis on solving the mystery at its heart. The program and its team have earned critical acclaim, including 20 Emmys and three Peabody Awards.

"48 Hours" began as a documentary in 1986 and became a regular series two years later. It was built around a team of correspondents covering one subject for 48 consecutive hours. Over time it evolved into the premiere broadcast for law, crime and justice stores -- its journalists, for example, have been credited with uncovering new information that has led to high-profile cases being overturned and wrongfully convicted people released from prison. The large library of episodes are revisited in "48 Hours on ID," focusing on investigations that explore themes of jealousy, murder and deceit.

Anchored by Lester Holt, "Dateline" is NBC's signature newsmagazine, bringing viewers storytelling at its best by putting the pieces together to present the full picture of real-life events. NBC News correspondents cover compelling stories and issues of the day, ranging from mystery and crime to in-depth investigations and breaking-news events.

"Dateline" has been a staple of the newsmagazine genre since premiering in 1992. Given how long it's been on the air, the show has an extensive archive of in-depth news stories and investigative journalism. This syndicated version offers viewers another chance to watch some of the show's previous content, serving up real-life mysteries and in-depth investigations from the show's 20-plus years on the air. Cases involving murders and missing people are frequent topics on the series that has won multiple Emmys in the news and documentary category.

Investigation Discovery and People magazine partner to re-examine some of the most high profile crime cases in recent history. The one-hour series brings viewers tales of betrayal, buried secrets and unsung heroes, ripped from the pages of one of the nation's top weekly magazines. These stories transcended news and became part of pop culture, revealing shocking twists, new evidence, and unexpected resolutions. Interlaced within every episode are exclusive interviews with People's journalists, archival footage, re-creations, and firsthand accounts by those closest to the investigations.

ABC News' long-running "20/20" franchise has been branching out and airing versions of the show on a number of cable networks in recent years. OWN has its own edition of the newsmagazine, featuring the usual variety of in-depth stories viewers have come to expect from ABC's stable of investigative journalists. Stories of mysterious deaths, disappearances, betrayal and revenge -- often involving friends, family or business associates -- are on the docket in the hourlong episodes.

As opposed to its sister series "See No Evil," which details unlawful activity rooted out with the aid of surveillance cameras, "Hear No Evil" uses authentic audio recorded at crime scenes to build each episode's narrative. The recordings, captured by victims' families, investigators and the killers themselves, reconstruct the murderous acts with the aid of first-person testimony, stylized re-enactments and video archive. The result is a series that ultimately lets viewers' imaginations and instinctive fears of the unknown come to the fore.

"Accident, Suicide, or Murder" investigates the deaths that are considered just a little bit too mysterious. This hourlong series takes viewers along on an exploration of unbelievable true stories. Each episode retraces the original investigations from the start to the finish. Investigators lead viewers through all of the twists, turns and surprises that crop up as they dissect the red flags, show evidence, and point out the strange behavior that puts everything into question.