There was a four-year chimp war in Gombe resulting in brutal assaults that made even Jane Goodall question her conclusions about our closest genetic relatives.
In 1986, 18-year-old Denise Diane Pflum disappeared without a trace from her hometown in Indiana. The ambitious teen was never found and was possibly murdered.
In 2021, after nearly 30 years, Shawna Beth Garber was linked to remains found in 1990 in rural southwest Missouri. Here's what we know about her murder.
Bryan Kohberger is accused of killing four University of Idaho students in November 2022. Here's what's been said of his behavior leading up to the killings.
Some of the Gilgo Beach murders are now attributed to Rex Heuermann, believed to be the Long Island Serial Killer. How have the killings affected the area?
In 2023, Jeffrey Norman Crum was indicted for the 1993 murder of Jennifer Odom after being linked to another murder. Here's what we know about him so far.
In light of the arrest of a man police say is the Long Island Serial Killer, the unsolved 1982 murder of Tina Foglia in Long Island may warrant another look.
More than a decade after police found 11 murder victims on Long Island's Gilgo Beach, they made an arrest. These are the biggest pieces of evidence so far.
Some think the unsolved 2008 murder of Tanya Rush may be linked to the Gilgo Beach murders, but no one has ever come forward with any tips in the cold case.
In 1984, cheerleader Kirsten Costas was brutally murdered by her classmate, Bernadette Protti. Over the years, numerous films have been made about the case.
Body language expert Mark Bowden's analysis of a 2022 interview with Gilgo Beach murder suspect Rex Heuermann indicates he was uneasy about human interaction.
In the 1990s, BBC journalist and presenter Jill Dando hosted "Crimewatch." Eventually, she was the subject of an episode, and the case has yet to be solved.
Politician Mitt Romney's great-great-grandfather, Parley Parker Pratt, was influential in the Church of Latter-Day Saints - and also met a gruesome death.