Mysteries at the Museum (2010)

S12E4 Kensington Runestone; Smile! You're Being Hijacked; and Harriet the Spy

Don Wildman investigates a mysterious stone tablet that could reveal secrets about the origins of America. He also looks into a model airplane linked to a hijacking that was initially deemed a prank. Additionally, he explores a revolver that was owned by the first American woman to command an armed military expedition.