Missing: Dead or Alive?

Der Rhein-Ruhr-Ripper Frank Gust

A look at some of Europe's and America's most horrific serial killers and how bizarrely simple blunders eventually brought them to justice.

Each episode of this true-crime series begins with the grisly discovery of a body and the onset of an intense investigation. When police think they've solved the case, shocking twists sends each investigation into the depths of evil.

Murder She Solved tells the true stories of female crime investigators who, against all odds, have solved some of the most daunting murder cases in North America. Combining elements of mystery and intrigue, the series' unique visual style and riveting storytelling compels viewers to connect the dots as crime-solvers unravel the clues in their journey to solve the crime.

The next generation crime series revealing the ground-breaking police techniques used to solve murders on Britain's streets.

Filmmaker Joe Berlinger’s real-time, eight-part investigation into a string of mysterious sex and drug-fueled disappearances and deaths in the heart of America’s rust belt.

The two-night investigative special follows the stories of four former Jehovah’s Witnesses, as they recount details of the sexual abuse they endured during their time within the organization.

The rise, fall, and improbable resurgence of Ashley Madison, the dating website aimed at marriage cheats. Pioneers in outrageous viral advertising, the company stops at nothing to gain publicity and by 2015 it appears to be on the brink of world domination. Then a team of hackers expose the intimate sexual secrets of millions of members, with devastating consequences. But in the aftermath of the data breach, are the site's adulterous users the only ones with dirty secrets?

Anthology series based on real criminal cases, featuring an interview with the actual perpetrator at the end of each episode.

When the disappearance of two teen girls shocks a quiet coastal town, a bereft grandmother risks everything to uncover the truth and seek revenge.

Working for nearly three decades with the Charlotte (N.C.) Police Department, Detective Gary McFadden has developed unorthodox methods that have helped him solve more than 700 homicide cases. He has a 90-percent success rate with the investigations he pursues. "I Am Homicide" shows how Detective McFadden uses his street smarts to work the neighborhood networks and gather critical information for leads, at times risking his life by trusting the streets he calls home.

The story of how the lottery invented to finance a zoo was incorporated by Rio de Janeiro's popular culture and, in the hands of organized gangsters, transformed itself into an immense crime empire.

NBC News correspondents Keith Morrison, Josh Mankiewicz, Stephanie Gosk and Andrea Canning examine the final day of a victim’s life – the split-second decisions and pivotal moments that made the difference between life and death. Detectives retrace those crucial hours looking for clues to solve the mystery.

Inspired by actual events, this true crime anthology series takes a deep dive into the dark, twisted minds of terrorists and follows the brave souls who hunt them down.

When the leads dry up and a case goes cold, there’s only one thing that keeps investigators going—the hunch that Somebody’s Hiding Something. From grieving family and friends to jilted lovers and eyewitnesses, investigators pores over every detail and discrepancy to uncover the motive for the murder—along with the reason for suppressing a key piece of evidence. It’s a real-life psychological thriller, and every episode features a genuine murder mystery that keeps armchair detectives guessing until the very last frame.

What happens when "the other woman" tires of her title? Monstresses on bio. recounts the most sensational stories of cheating men and their out-of-control mistresses. Each episode introduces two mistresses and reveals the deadly consequences as they take matters into their own hands.

Models are the epitome of beauty, fame and glamour. They are the lucky few - blessed with faces and bodies worshiped and envied around the world. But what happens when that model high life all little girls dream of turns into a nightmare?

A missing FBI agent reappears six years after being declared dead.

Whether it's a love triangle that violently collapses or a workplace affair that implodes, the re-enactments -- two per episode -- allow viewers to knock down closed bedroom doors, navigate secret trysts, and witness salacious liaisons. Hosted by Emmy-winning actress Susan Lucci, who's been a part of a few steamy scandals and deadly dalliances in her daytime soap career.

Dateline NBC, or simply Dateline, is a weekly American television newsmagazine series. It was previously the network's flagship newsmagazine, but now focuses mainly on true crime stories with only occasional editions that focus on other topics.