Edward Leedskalnin built a Coral Castle in Florida City, Florida during modern times. The stones weigh up to 5 tons. Yet he used simple tools and a tripod. The mystery he once said "it is all there in the Egyptian texts" . Join Leonard Nimoy In Search of The Castle of Secrets to see and marvel at what one man accomplished.

Was a secret treasure buried on Oak Island off the coast of Nova Scotia? This episode examines the possibilities that it was and also covers some of the searches for it.

New information on President Kennedy's assassination, including a police tape revealing a fourth shot, expert handwriting analysis on Oswald's diary, and a possible Oswald lookalike as a stealth assassin.

An examination of the legendary, but troubled, painter Vincent Van Gogh - was he really mentally ill?

Follows the incredible hijacking commited by D.B. Cooper, who parachuted out of an airplane with the ransom money and was never seen again. It offers some evidence about Cooper's possible fate.

An examination of cult leader, Jim Jones, and his People's Temple following that culminated into a horrific mass suicide in Guyana.

A contemplative look at Hiroshima, before and after 1945. The city has proved resilient, yet those exposed to the bombing were damaged physically and mentally and questions linger regarding effects caused by massive doses of radiation.

An examination of strange disappearances of ships and planes in an area of the Great Lakes that is considered to be more dangerous than the fabled Bermuda Triangle.

The hunt for the fugitive sadistic Nazi doctor and his most famous pursuer, Simon Wiesenthal.

Jimmy Hoffa was the president of the powerful Teamsters' Union. He only cared about himself. He fought to the top, but eventually got killed, although his body was never found.

A look at the life of Harry Houdini including his efforts to debunk phony psychics and spiritualists of the time. Also attempts of his wife to contact him after his death

Scientists at the National Severe Storms Laboratory work to detect and mitigate the impact of tornadoes, which are the most ferocious storms of all, often striking with little warning and inflicting massive amounts of damage.

An examination of the mysterious disappearance of the big band leader.

An examination of the British ocean liner torpedoed during World War I and possible reasons for why she sank so quickly.

An examination of the life of John Merrick, a catastrophically deformed man in Victorian London, and the possible medical cause of his condition.

An examination of the conspiracy surrounding the assassination of Abraham Lincoln including a theory that the assassin John Wilkes Booth may not have been killed in a shoot-out with Union troops.

This episode investigates the life and mysterious death of Amelia Earhart, one of the most famous women aviators who disappeared while trying to become the first woman to fly around the world. After compiling records as the first woman to fly solo across the Atlantic, the first woman to fly across the United States, and from Hawaii to California, she set her sights on a trip around the world. Tragically, she disappeared, along with her navigator, Fred Noonan, on one of the last legs of her flight, in the South Pacific, somewhere near her destination of Howland Island. Or did she? Theories abound that she was really a spy for the U.S. and was on a spy mission of Japanese bases and the build up leading to World War II. Others say she was just as she appeared, a woman aviator trying to be the first woman to fly around the world, and died in the effort. Others claim there is evidence that she was captured and killed by the Japanese as a spy.

Was Homer's account of the Trojan War in "The Illiad" based-upon historical fact? Heinrich Schliemann, a self-made millionaire and amateur archaeologist, unearthed Troy and its treasures in 1873, thereby confirming Homer's classic tale.

Do animals, including humans, possess extrasensory perception? If so, are we humans and our companion animals able to communicate on a deeper level? Further, do humans have the ability to converse telepathically with companion animals?

A look at new evidence which offers an intriguing theory about where the colonists of the ill-fated Roanoke colony went.

An investigation into UFO sightings with an emphasis on the 1947 Roswell, New Mexico sightings, Project Blue Book, and Hangar 18 at Wright-Patterson AFB.

Can the full moon drive men mad? Once dismissed as a myth, scientists are reevaluating the effect exerted by our nearest neighbor.

"In Search of..." explores the claims that the chalice used by Jesus Christ at the Last Supper may have been found.

Did explorers from China arrive on the west coast of North America in 458 A.D. and then proceed to Central America? This episode examines both the facts and myths that surround this subject.

A examination of the last great passenger dirigible and the question of whether its explosive destruction was by accident or sabotage.