History's Greatest Mysteries

An infamous Cold War cold case: nine hikers found mutilated on a remote mountain slope. For over 60 years, authorities and amateurs alike have been trying to figure out what happened.[HISTORY Channel]

After a series of dark and ominous events, an unassuming family home on Long Island becomes the most notorious house in America. 50 years later, it's spawned a title wave of books, documentaries, and films.[HISTORY Channel]

It's a treasure coveted by everyone from Roman Emperors to Adolf Hitler - a sacred object said to hold incredible powers of healing, resurrection and immortality. It may be the world's most sought-after relic.[HISTORY Channel]

A powerful union activist disappears from a Detroit suburb. 45 years later, it remains one of the most notorious missing person cases of all time. [HISTORY Channel]

One of World War II's greatest unsolved mysteries: an incomparable work of art worth half a billion dollars, lost without a trace. [HISTORY Channel]

A cold case that ignites every parent's worst fears: on Christmas morning, 1945, five siblings vanish from their family home in West Virginia during a raging fire. [HISTORY Channel]

Using new evidence to look at some of the most historically important mysteries of recent times.[HISTORY Channel]

As the Cold War ramps up, a well-dressed man is found dead within miles of a nuclear testing site on a tranquil Australian beach. There are no clues to his identity, or what could have happened. [HISTORY Channel]

A medieval manuscript.

A spree of gruesome murders shocks Victorian England - and the world. The homicidal maniac responsible remains a mystery. Can history's most notorious serial killer ever be identified? Who is Jack the Ripper?[HISTORY Channel]

When the infant son of an aviation legend is snatched from his crib at home, it ignites a media firestorm. After a nationwide manhunt, the supposed culprit is brought to justice. But did authorities get the right man?[HISTORY Channel]

Using new evidence to look at some of the most historically important mysteries of recent times.[HISTORY Channel]