Did homemade heads help destroy the reputation of Alcatraz prison? How did the Enigma machine help to win World War II? And is the Walters Art Museum in Baltimore the actual home of the Mona Lisa?
Does a prehistoric "monster" provide clues to an Ice Age puzzle? Is an odd wooden figure the explanation for a 60-year-old mystery or the key to a government cover-up?
What does a vintage fire engine tell us about what really destroyed San Francisco after the 1906 earthquake? Does a 10,000-year-old mastodon skeleton reveal a shocking story of greed and murder inside one of our nation's most esteemed universities?
Did the Japanese send weapons of mass destruction to the US mainland during World War II? Is a statue of illusionist Harry Houdini haunted? Does an old hatchet hold the key to one of the nation's most sensational unsolved murders?
Bonnie and Clyde's rifle, a space suit worn by a forgotten pioneer of the skies, a futuristic train and a bizarre a deep-sea Fish are featured. And does a tattered diary finally end one of exploration's fiercest debates?
What does the largest T. rex skeleton ever discovered tell us about the prehistoric food chain? Who was behind the biggest art heist in American history? And what does a simple garment reveal about the assassination of a US president?
How did a doctor-approved "cure-all" end up destroying countless lives? How did a tape recorder ultimately bring down a US president? And how did an ordinary lunch counter become center stage in an event that would help overturn centuries of oppression?
How did a manuscript and eyeglass case save Teddy Roosevelt's life? Could a 1912 wireless message warning about icebergs have saved the Titanic from her tragic fate? And does a large primate tooth prove the legend of Bigfoot is real?
How did an early electronic musical instrument trigger one of the biggest spy scandals of the century? How did a state-of-the-art suspension bridge fail so spectacularly? And how did one of the most famous toys in history originate from a war shortage?
Why did a metal staircase haunt President Gerald Ford until the day he died? How did a pie maker, a UFO fanatic and Yale students invent one of the world's most popular sports? And why does John Dillinger's death mask appear dubious to people who knew him?
Does a recently discovered letter expose a heinous crime committed over a century ago? How did a 120-year-old pot utterly transform Seattle? And how do 4 ordinary-looking objects represent one of the most dreaded weapons of World War II?
Why did an astronaut golf on the moon? How did the most advanced commercial jet ever developed become an artifact from the past? And why is an antique doll in Key West thought by some to be alive?