A viewer has a recording he thinks holds evidence used in the World War II treason trial of Iva Tugori, aka Tokyo Rose. Gwen consults with experts from Long Island to Los Angeles to investigate. Elyse investigates whether a contributor has the Holy Grail of the Wild West: a photo of the Lakota warrior who defeated General Custer? Wes heads to Florida on a quest to reunite a poignant diary with the family of a World War II pilot.