On March 10th, 1928, 9-year-old Walter Collins vanished. Months later, police found the lost boy and reunited him with his mother Christine. But she protested that the rescued boy wasn't her son at all, and went on to sue the police officers who pressured her to take in the child.

This is a story of murder, manipulation, and a confession that unraveled an entire community in the small town of Knutby. In the early 2000s, what seemed like an open-and-shut case revealed layers of gut-wrenching secrets — and it all starts with text messages from God.

A mother, her teenage daughter, and her daughter’s friend went on a hike on a warm summer day in 1954. One of them never returned. As police investigated the site of her so-called accident, they came to a harrowing conclusion. 

A small-time crook made global headlines after kidnapping Freddy Heineken, the billionaire beer heir, then spent the next decades building an empire of his own. Wim Holleeder is the Netherlands’ most notorious crime boss — an untouchable gangster whose downfall came at the hands of his own family. 

An hour outside of Dublin, the scenic Wicklow Mountains and surrounding towns have developed a dark reputation. Inexplicable disappearances and unsolved murders have plagued the area for four decades, prompting the creation of a special task force to investigate whether the cases were the work of a serial killer. 

On March 31st, 1922, an entire family was violently murdered on their farm. The gruesome investigation revealed a web of village feuds, incest, and even claims of paranormal activity. The massacre remains Germany's most incredible unsolved case.

He was the 20th century's greatest outlaw. She was a peerless beauty trapped in a loveless marriage. Together they perpetrated a spree of brutal violence that left its mark on Brazil forever. This is the story of Lampião the Bandit King and his love, Maria Bonita. 

In 1974, a missing persons case in Reykjavik, Iceland, turned into a murder investigation when six people confessed to two killings. The only problem: There were no bodies. No evidence. And the six suspects had no memory of committing any crimes.

A family camping trip in 1980 ended with a cry that became a punchline, and a mother accused of murder. It would take three decades for the Australian government to acknowledge what Lindy Chamberlain had been saying all along — that her nine-week-old daughter Azaria had been killed by dingoes. But in that time, the shoddy investigation and sensational media coverage ensured there was more than one victim in this case. 

In 1997, people in the small town of Aman Damai unearthed a woman's body in a sugarcane field. It was clear she'd been murdered — and she'd last been spotted visiting the local shaman. As authorities dug deeper, they learned that the woman was only the latest victim of a prolific serial killer.

For almost two decades, a gruesome serial killer preyed on young lovers in the hills of Florence. And he wasn’t just out for blood — he wanted body parts. After a 40-year manhunt, hundreds have been accused of being the Monster, many have been jailed, but the real killer has never been caught.

In 1996, a pair of fishermen hauled in a body from the English Channel. As police try to identify the victim, they find he has unexpected ties to one of the most wanted con artists in Canada.

A 19th-century London district is terrorized by a serial killer who murders and mutilates women. Each gruesome case is investigated relentlessly — but even after 133 years, the notorious Ripper’s true identity remains unsolved.  

For 18 years, Jean-Claude Romand projected the image of a brilliant doctor, savvy investor, and loving family man. In reality, he was a con man whose lies would be exposed in 1993 after a spree killing that shocked the world. 

A former luchadora disguises herself as a social worker and breaks into the homes of elderly women in Mexico City. From the late ‘90s to 2006, Juana Barraza strangled sixteen victims — but that number might actually be in the forties.