Although friends, family, and Anne Frank's diary have shed some light on Margot Frank, her own diary was lost — leaving much of her inner life a mystery.

A decorated Army veteran, Timothy McVeigh carried out the Oklahoma City bombing in 1995 — the deadliest act of domestic terrorism ever seen in the United States.

For 18 years, Beth Holloway searched for her missing daughter Natalee — until Joran van der Sloot finally admitted to killing her in 2023.

In a strange twist of fate, Thomas Jefferson died on July 4, 1826 — the 50th anniversary of the adoption of the Declaration of Independence.

The winged hussars originated in the early 16th century when a group of exiled warriors from Serbia banded together as mercenaries in Poland — and within a century, they had become one of the most fearsome cavalries in world history.

Archaeologists digging inside Cloggs Cave found ceremonial sticks smeared with animal or human fat that were once used in Gunaikurnai rituals to cure illness.

Theodore Roosevelt received the watch from his sister and brother-in-law shortly before he went to Cuba during the Spanish-American War, but it was stolen in 1987.

On January 31, 1976, Marie Elizabeth Spannhake vanished near her home in Chico, California — but it wasn't until 1984 that a woman named Janice Hooker claimed that her husband Cameron had abducted and murdered Spannhake eight years before.

From the 19th-century boomtown of Bodie, California to the real-life "Silent Hill" in Centralia, Pennsylvania, these ghost towns across the U.S. serve as haunting reminders of what life was like there before they were abandoned.

It was only thanks to Kerstin Fritzl's sudden illness that she, her mother Elisabeth, and two of her siblings were finally able to escape from their basement prison in 2008.

Archaeologists excavating at Zorita de los Canes, a 9th-century hilltop castle in Guadalajara, Spain, recently unearthed the remains of a woman alongside an order of medieval warrior monks.