Elisa Lam's final moments continue to mystify.

You'll never want to be alone again.

Few know of her life and mysterious death.

In 1961, Joan Risch vanished from her Massachusetts home, leaving behind two children, a distraught husband, and a kitchen streaked with blood.

Bierce sent a letter from Chihuahua, Mexico in 1913. It was the last anyone ever heard from him.

In 2004, young Maura vanished without a trace. Over a decade later, her case remains an utter mystery.

Some believe she fled to the woods, just like the character from her famous novel.

She hiked into the woods one winter afternoon and was never seen again.

When daylight finally spilled into the musty chamber, a shocking sight came into focus...

What happened to the vanished heiress on that fateful evening in 1910?

In 1845, the doomed Franklin expedition set sail for the Northwest Passage, never to be seen again.

In 1921, the ship was spotted in North Carolina under suspicious circumstances. Days later, the crew and their belongings had disappeared – for good.