People searching for answers, healing, or human connection end up joining some of the strangest organizations.

Questions persist about the last night of Mario Biondo, the husband of Spanish TV host Raquel Sánchez Silva. This true-crime series uncovers...

These chilling stories of murder hit terrifyingly close to home -- each a real-life tale about the last thing anyone wants to find in their basement,...

Working for nearly three decades with the Charlotte (N.C.) Police Department, Detective Gary McFadden has developed unorthodox methods that have...

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,...

NBC News correspondents Keith Morrison, Josh Mankiewicz, Stephanie Gosk and Andrea Canning examine the final day of a victim’s life – the...

This docuseries follows the high-profile case of Belgian politician Bernard Wesphael, who was accused of murdering his wife in 2013.

Mixing present-day interviews with previously unheard recordings, this true-crime series examines serial killer David Berkowitz's mark on 1970s New...

When a vulnerable woman goes missing in the Dublin Mountains, police assume she has committed suicide. But a chance discovery by a group of fishermen...

It's spring and fear hangs over west-end Montreal. For weeks, an unknown man has been entering people's homes at dusk and threatening them at...

The timely story of the unprecedented relationship between acclaimed New York Times best-selling author and memoirist Jillian Lauren and the most...

Brazilian TV personality and politician Wallace Souza faces accusations of masterminding the violent crimes he reported on and rallied against.

Notorious serial killer Joe Carroll, after being found guilty of murdering 14 female students on the Virginia college campus where he taught...

Death row inmates convicted of capital murder give a firsthand account of their crimes in this documentary series.

Facing an existential threat that could bring down the Crime Lab, a brilliant team of forensic investigators must welcome back old friends and deploy...

The First 48 follows detectives from around the country during these first critical hours as they race against time to find the suspect. Gritty and...

The docuseries follows people deeply involved in the group NXIVM — which is faced with various charges, including sex trafficking and...

A group of up-and-coming hustlers stumble upon a truckload of stolen gold bullion and are suddenly thrust into the high-stakes world of organized...

In the late 1960s, a Los Angeles police sergeant with a complicated personal life starts tracking a small-time criminal and budding cult leader...

In a small New York town, a haunted detective hunts for answers about perplexing crimes while wrestling with his own demons.

Serial killer Jeffrey Dahmer confesses to his gruesome crimes in unguarded interviews, offering an unsettling view into a disturbed mind.

The Sons of Anarchy (SOA) are an outlaw motorcycle club with many charters in the United States and overseas. The show focused on the original and...

In 1991, four teenage girls were brutally murdered at a frozen yogurt shop in Austin, Texas. What happened that night forever shook the Austin...

When ex-soldier Maya sees her murdered husband on a secret nanny cam, she uncovers a deadly conspiracy that stretches deep into the past.