Hae Min Lee was last seen alive on January 13, 1999 — four weeks before the 18-year-old's body was found in Baltimore's Leakin Park. Her ex-boyfriend Adnan Syed was later sentenced to life in prison for her murder, though his guilt remains in question to this day.

Even as Aileen Wuornos murdered seven people within the span of just 12 months, her girlfriend Tyria Moore stood by her — before finally cooperating with the police and helping to bring the "Monster" serial killer down.

In the summer of 2008, locals in the New York hamlet of Montauk were shaken by the discovery of a bloated and bloodless creature they couldn't identify. It was dubbed the "Montauk Monster" — then it mysteriously vanished.

On June 20, 2001, Andrea Yates drowned her five children in their suburban Texas home. Five years later, she was found not guilty by reason of insanity.

After Lori Farmer, Michelle Guse, and Doris Milner were murdered at Camp Scott in 1977, the case remained unsolved for decades. Has DNA evidence just identified Gene Leroy Hart as the killer?

On February 22, 1970, an Australian teen named Keith Sapsford snuck onto the tarmac at Sydney Airport and hid inside a Tokyo-bound plane — then disaster struck.

A successful actress and singer, Claudine Longet became infamous after she shot skier Spider Sabich to death inside their Aspen, Colorado home on March 21, 1976.

An experienced test pilot and cosmonaut, Vladimir Mikhaylovich Komarov died in April 1967 when a parachute failure caused Soyuz 1 to crash into the ground, leaving only his charred remains behind.

See the outrageous footage from November 12, 1970, when the town of Florence, Oregon tried to dispose of a beached whale carcass by blowing it up.

After hanging himself in his Detroit hotel room on May 18, 2017, Soundgarden frontman Chris Cornell was found dead at the age of just 52.

After presiding over ancient Egypt with unprecedented power, Queen Nefertiti mysteriously vanished from the historical record in 1336 B.C.E. But some believe she secretly took her husband's place as pharaoh after he died.