Go inside the mystery of who was the Zodiac Killer — and the stories of nine men who are the most convincing suspects.

Darrell Lee Clark and Cain Joshua Storey were just 17 when they were handed life sentences for the death of their friend.

The sarcophagi found under Notre Dame come from different eras, and the older of the two contains the remains of a man with an oddly deformed skull.

In 1993, Loyd Jowers confessed that he had paid someone to kill Martin Luther King Jr. as part of a high-level conspiracy involving government agencies and that James Earl Ray had been framed.

The 1965 film told the story of the musical von Trapp family that fled the Nazis in Austria, but there were a few key points that Hollywood either changed or left out entirely.

Physicists Harry Daghlian and Louis Slotin both suffered agonizing deaths after making minor slips of the hand while working on the plutonium orb known as the "demon core" at Los Alamos Laboratory in New Mexico.

The three human skulls from the Congo had once belonged to Belgian King Leopold II and bear inscriptions and jewels.

From cat burning to divorce by combat, these facts show exactly why the medieval period is known as the "Dark Ages."

Since being discovered in 1957, the "Boy In The Box" case baffled Philadelphia police. But thanks to genetic testing, the four-year-old victim has been revealed to be Joseph Augustus Zarelli.

Archaeologists believe that the vessel sank sometime in the 19th century when ships were as prevalent as "Amazon trucks."

For centuries, the only evidence historians had of the Roman Emperor Sponsian was this hoard of coins bearing his visage that were found in 1713, and many believed them to be fakes.