Edgar Allan Poe loved ciphers—and in 1841, "The Raven" author issued a cipher-related challenge.

LONGFORM
With one drop of his mysterious green liquid, Louis Enricht claimed he could turn water into nearly-free fuel. He was a dirty liar.
The spy thriller 'The 355' gets its title from a Culper Spy Ring agent known only as “355.” Who was she?
Nikolaj Coster-Waldau is bringing Ejnar Mikkelsen’s death-defying Arctic expedition to the big screen. Here’s the history behind it.
Georgia Gilmore played a pivotal role in the civil rights movement—one of feeding and funding those at the frontlines. A marvelous cook, she took it upon herself to bring together a secret society-esque group of women who used food to fuel the movement.
Despite having shot her own leg off in a hunting accident, Virginia Hall became one of the most feared Allied spies of the war.
As a teenager, Sandy Allen was already over 7 feet tall—an impressive and unusual stature that would define her for the rest of her life.
"In the Air Tonight," Phil Collins's first solo single, has been inspiring vigorous air-drumming and bizarre rumors for more than 40 years.
In the old days, you sometimes had to just show up to a movie theater and hope something good was playing. Then Moviefone changed everything.
Redwood National Park is home to Hyperion, the world's tallest tree. But you won't find it marked on any maps—and that's for its own good.
Redwood National Park is home to Hyperion, the world's tallest tree. But you won't find it marked on any maps—and that's for its own good.
Redwood National Park is home to Hyperion, the world's tallest tree. But you won't find it marked on any maps—and that's for its own good.
The Venus flytrap is a favorite houseplant, but its ubiquity hides a world of threats. Now, some scientists think they have a solution for saving it.
For more than a century, a rumor has circulated that the William Seward statue in New York City's Madison Square Park is a composite—Seward's head plopped on Abraham Lincoln's body. Where did the rumor come from and ... is it true?
Death was just the beginning for the embalmed noggin of former Lord Protector of England, Ireland, and Scotland Oliver Cromwell.
In 2000, Rodney Marks died suddenly from methanol poisoning in a remote research station in Antarctica. Nearly 20 years later, the circumstances surrounding his death remain a mystery.
How Chucky from 'Child's Play' went from a satire of the Cabbage Patch Kids to a tiny titan of terror.
When 11-year-old Terry Jo Duperrault was found in the middle of the ocean, she was hours from death. And she was the only member of her family left alive.
Belle Gunness had some skeletons in her closet.
This year marks the 40th anniversary of the biggest tragedy in 'Star Wars' since the destruction of Alderaan. We spoke to the people who witnessed it firsthand.
This fearless breed is helping to reduce conflicts between people and predators.
Beyond the border of an ordinary parking lot lies the most cutting-edge graveyard in the world … and a hands-on lab for cops and forensic anthropologists.