U.S.S. Indianapolis- A Cleveland, Ohio, man owns some intriguing artifacts that he believes may date back to a kamikaze attack on the U.S.S. Indianapolis in March 1945. The contributor's uncle served on this cruiser, and while home shared a story with his family about an attack on his boat. He returned to duty and was killed when the Indianapolis was sunk by a Japanese torpedo during the final weeks of World War II. Years later, the family uncovered fragments of aluminum, military patches and a Japanese placard that the uncle had placed inside a cedar chest during his time on leave. Could these items be from the kamikaze attack on the U.S.S. Indianapolis? HISTORY DETECTIVES ventures to Texas and Washington, DC, to examine the virulence and desperation of the Japanese suicide attacks that led up to one of the greatest sea disasters in U.S. naval history.

Highlander Badge - While scuba diving in the Savannah River 13 years ago, a Georgia man uncovered a mysterious badge. Though it is slightly corroded, the History Detectives are able to decipher Latin inscriptions, the imprint of a thistle, the British Crown and the number "71." Initial research reveals that a regiment within the British Army was in fact a group called the 71st Highlanders from Scotland. The badge could have been lost by one of the Highlanders, who were among the fiercest troops of the war. Their deployment to Georgia and South Carolina signaled the importance of the British High Command's so-called Southern Strategy. But the puzzle remains: how did the badge end up in the river? Was it during a desperate maneuver by the British to turn the tide of the war and reclaim their U.S. colonies? HISTORY DETECTIVES travels to Georgia and South Carolina to find out. 

Spirit of St. Louis(Repeat from Season 3) - Two brothers from Parsippany, New Jersey, grew up listening to their uncle's claim that he built the engine for the Spirit of St. Louis- the plane made famous by Charles Lindbergh's historic nonstop flight across the Atlantic. A letter addressed to the uncle from the Wright Aeronautical Corporation in 1927 thanks him for his "enthusiasm and outstanding cooperation" following "Captain Lindbergh's recent achievement," but makes no direct mention of his role in the event. The family legend leads HISTORY DETECTIVES to uncover the forgotten history of Lucky Lindy's legendary flight.