Found in tropical places like the Florida Everglades, the manchineel tree is a flowering spurge plant that is packed with poison — from its fruit to its bark and sap.

In June 2013, 19-year-old Maureen Leianuhea "Anu" Kelly went missing while camping with friends in a remote part of the Pacific Northwest, wearing nothing but a fanny pack.

Rico Omarr Harris was driving from Los Angeles to Seattle when he left a message for his girlfriend, pulled off the interstate, and disappeared in the mountains west of Sacramento.

Brandon Teena was just 21 years old when he was raped and murdered in a brutal hate crime in December 1993.

For thousands of years, accused criminals were subjected to being pressed or crushed to death, most famously during the Salem Witch Trials of 1692.

An apocalyptic author, Chad Daybell attracted the attention of an Idaho mom named Lori Vallow — who purportedly killed her kids because they were "zombies."

Dena Schlosser of Plano, Texas chopped off her daughter Margaret's arms with a kitchen knife on November 22, 2004, while suffering from postpartum psychosis.

Daniel K. Inouye was a Japanese American soldier with the 442nd Infantry Regiment during World War II who rose to become the highest-ranking U.S. Senator when he died in 2012.

In July 1946, famed aviator Howard Hughes was piloting an experimental spy plane when the engines failed and he crashed through three mansions.

In the 1920s, Stephanie St. Clair built a gambling empire in Harlem — and left an unforgettable mark on New York City history.

In 1867, a poor Irish immigrant named Bridget Deignan was put to death for the murder of her boss, Mary Ellen Coriell — but here’s why some modern historians think she may have been unfairly blamed.