Serial killer Jack the Ripper's first known victim was Anne Nichols, who went by the name Polly. She had a husband and five children years before her murder.
From gangland hits to a killing spree that still haunts Texas and Arkansas, here are 14 murder cases from the 1940s that have yet to be officially solved.
Serial killer Ted Bundy's first potential victim, Ann Marie Burr, disappeared in the early hours of August 31, 1961, in Tacoma, Washington. Here's the story.
On November 4, 2019, a group of Mormon families were massacred en route to a wedding, near their community in Mexico. These are the grim details of that day.
Sometimes, a murderer can escape justice for decades. But the investigators never forget, and in 2023, now have far more advanced tools to solve cold cases.
Adrienne Salinas went missing in the early morning hours of June 2013 and her remains were found months later. The college student's death is still unsolved.
In 1995, six-year-old Arkansas resident Morgan Nick disappeared. Now new evidence found in the case may finally reveal Morgan's abductor, who has since died.
Al-Hakim bi-Amr Allah, the sixth Fatimid caliph in Egypt. Known for his harsh laws, at only 36 years old, he mysteriously disappeared and was never found.
The abduction and murder of 4-year-old Grégory Villemin shook his French community. Here is why his killer remains a mystery even several decades later.
The disappearance of Nation of Islam founder Wallace D. Fard has been a mystery for decades. Here's what happened to the founder of the controversial group.
Advances in DNA technology have led to things like commercial ancestry DNA testing and the use of DNA in forensics — solving crime by matching the DNA samples.
In the United States, approximately 600,000 people go missing each here. Here is more about the terrifying conspiracy theory that links disappearances to caves.
Across the United States, an unprecedented number of homicide cases remain cold. Here is a closer look into why so many cold cases are often never solved.
It's hard to believe, given the technological advances of the last 30 years, but it's still, tragically, possible for someone to mysteriously disappear.
On June 9, 1995, Colleen Nick decided she and her 6-year-old daughter, Morgan, needed a "girls' night out." At the end of the night, Morgan had disappeared.
In November, 2022, a more than four-decade-old cold case was solved using modern-day DNA technology. Here's how authorities identified Cheryl Thompson's killer.
Marie Elizabeth "Marliz" Spannhake went missing from her apartment in the 1970s. Here is what happened to her apartment and what neighbors have to say about it.
Unsolved mysteries hold a fascination with the public at large. Here's Japan's $300 million yen heist that remains unsolved after more than half a century.
On the afternoon of October 21, 1967, two boys fished at the Willamette River, hoping to catch something big enough to keep. Instead, they discovered a body.
Leah Toby Roberts left her home in North Carolina on March 9, 2000, and was never seen again. Here is the unsolved disappearance of Leah Roberts explained.