The two horned helmets were uncovered by a peat cutter in Viksø, Denmark, in 1942 and have just been dated to 900 B.C. — confirming they were never worn by Vikings.

For two years, the humble New York town of Poughkeepsie was terrorized by a 250-pound serial killer named Kendall Francois, who murdered eight women before he was caught in 1998.

Known as the Woodford Slasher, John Joseph Joubert IV was just 16 when he stabbed a pencil into a six-year-old girl — before going on to murder at least three young boys.

A born-again Christian obsessed with "The Catcher In The Rye," Mark David Chapman killed John Lennon outside his Manhattan apartment on December 8, 1980.

Stephanie Matto sold her jarred flatulence for $1,000 a piece and made over $200,000 in her two-month venture while subsisting on a diet of yogurt, eggs, and beans — and ended up in the hospital when she thought she was having a heart attack.

Following in the footsteps of British occultist Aleister Crowley, Anton LaVey founded the Church of Satan with an impressive talent for showmanship.

In 2014, Michelle Carter texted her boyfriend Conrad Roy to kill himself just before his suicide. About three years later, she was sentenced to prison for involuntary manslaughter.

Joseph Martinez is locally known as "Jupiter Joe," a street astronomer who sets up his telescope on subway platforms and sidewalks and offers free lessons to children.

Ukrainian model and influencer Valeria Lukyanova has found fame as the real-life Barbie doll — though she claims her doll-like appearance is completely natural.

Before Albert Einstein died in April 1955, he told his family he didn't want to be studied. But hours after he perished, a medical examiner stole his brain for research.

Carole Hoff and serial killer John Wayne Gacy were high school sweethearts who were married for four years while Gacy murdered young men — and she didn't learn the truth until after their divorce in 1976.

Edward Paisnel committed more than a dozen rapes and assaults in the Channel Islands between 1957 and 1971, cementing his place in the annals of true crime as the “Beast of Jersey.”