According to some historians, Adolf Hitler secretly fathered a son named Jean-Marie Loret with a French woman in 1917. But is it actually true?

In August 1964, the U.S. entered the Vietnam War based on reports of an unprovoked attack in the Gulf of Tonkin — which the president knew were false.

No living human knows what happens when we die, but here's what we've gleaned from history and some near-death survivors who said they glimpsed the other side.

With the head of a jackal and the body of a human, Anubis was the deity of death and mummification in ancient Egypt who accompanied kings in the afterlife.

Union official and gangster Frank Sheeran claims he killed Jimmy Hoffa in July 1975 — but did he just make it up?

Paul Bateson was sentenced to 20 years in prison for the murder of Addison Verrill, but he also allegedly confessed to killing and dismembering six other men in 1970s New York.

The North Vietnamese called it the Hỏa Lò prison, while American POWs ironically dubbed it the "Hanoi Hilton." Hundreds were tortured there with meat hooks and iron chains — including John McCain.

Known for being a fearsome crime boss, Ellsworth Raymond "Bumpy" Johnson ruled the Harlem neighborhood of New York City in the mid-20th century.

On March 16, 1991, Latasha Harlins went to a grocery store to buy a bottle of orange juice. Soon Ja Du, the store clerk, assumed she was stealing it and shot her in the back of the head.

"It was weird," said Morgan Geyser of the Slender Man stabbing of Payton Leutner. "I felt no remorse. I thought I would... I actually felt nothing."

If Giulia Tofana's confessions are to be believed, then the lethal potion maker is among the most prolific serial killers in history.