Don Wildman examines a failed invention that helped create a multi-billion dollar industry, the bell of a ship whose crew vanished at sea, and a footprint of a lizard-like creature that roams the swamps of South Carolina.

Don Wildman examines a weapon that belonged to a secret network of spies.

Don Wildman examines a weapon involved in a twisted plot to assassinate a US president, a beast that some believed terrorized people in Wisconsin, and a file that speaks of a notorious woman whose illness brought fear to New York City.

At the Chicago History Museum, a pair of ostrich-feather fans tells of a risqué dancer who scandalized the Chicago's World Fair. At the Joseph Jefferson Mansion and Gardens on Lake Peigneur in Louisiana, an antique urn is one of few relics to survive a terrifying earth-shaking disaster. And at the Los Angeles Police Museum, twisted bullet fragments are all that remain of a notorious gangster's brutal slaying that remains a mystery.

Don Wildman examines a mangled car which tells of an intrepid journalist's quest for the truth, a vile of liquid containing what was believed to be a miracle cure and an iron safe which played a key role in a heist.

Host Don Wildman explores a plaster cast of hoof prints made by a mythic beast, a colossal war machine that once laid waste to an American city, and a presidential train car that remains shrouded in mystery.

Host Don Wildman investigates a strange wooden box used in a ritual, a weather beaten oxygen tank which tells of a daring ascent and the torn hat of a local pastor found at the scene of a crime.

An aged dossier which may be linked to one of the world's most notorious killers, a century-old $20 bill which was once wielded by a brilliant and elusive criminal, and an insect specimen which once wreaked havoc on America's Heartland.

Host Don Wildman examines a piece of industrial machinery from the early 1900s, a glass medical jar containing a strange substance and a tattered shirt that is one of the last vestiges of a aviation anomaly.

Ventriloquist dummies who may be witnesses to a crime, rudimentary electronic device that uncovers a devious plot, the plaster footprint of an unknown creature.

Host Don Wildman investigates a tattered briefcase belonging to an eccentric doctor , a massive chunk of stone, and a reel to reel tape recorder used by one of the FBI's informants.

Don Wildman investigates a pair of timeworn, every day dining implements.

Host Don Wildman examines a wooden detonator used in an explosive railway robbery, a video camera that captured a bizarre, unexplained phenomenon and the massive skull of a legendary beast said to terrorize the seas.

Compilation special focusing on segments from other episodes that are "spine tingling."

Special compilation episode focusing on items in museums in Washington, D.C.

Special compilation episode focusing on stories from throughout the series that are "unbelievable."