Season
Episode
- Episode 1: The Chisholm Trail; Harry Houdini Poster; McKinley Casket Flag
- Episode 2: Wartime Baseball; Confederate Eyeglass; Howard Hughes' Invention
- Episode 3: Coca-Cola Trade Card; Vicksburg Map; Lawrence Strike
- Episode 4: Alternative Service Certificates; Carolina Mystery Books; Mickey Mouse’s Origin
- Episode 5: U.S.S. Indianapolis; Highlander Badge; Spirit of St. Louis
- Episode 6: Orphan Film Reel; Chinese Opium Scale; Hermann Goering’s Shotgun
- Episode 7: Survivor Camera; Alcoholics Anonymous Letter; Tallahassee Mystery Cross
- Episode 8: Calf Creek Arrow; Doc Holliday’s Watch; Black Star Line Stock Certificates
- Episode 9: Grace Kelly Automobile; Illicit P.O.W. Photos; Mystery Motorcycle
- Episode 10: Lou Gehrig Autograph; Cleveland Electric Car; Philadelphia Freedom Paper
- Episode 11: Superman Sketch; Lost Musical Treasure; Rebel Whiskey Flask
History Detectives Season 4 Grace Kelly Automobile; Illicit P.O.W. Photos; Mystery Motorcycle
A group of researchers help people to find answers to various historical questions they have, usually centering around a family heirloom, an old house or other historic object or structure. It devotes itself "to exploring the complexities of historical mysteries, searching out the facts, myths and conundrums that connect local folklore, family legends and interesting objects."
