Season 4 Episode
- Season 4 The Cult Hotel
- Season 4 Hunting for the Ship of Gold
- Season 4 America's Gun Factory
- Season 4 Nazi Secrets in the Empire State
- Season 4 The Vermont Doomsday Gun
- Season 4 Idaho's Atomic Ghost Town
- Season 4 The Lair of the Mothman
- Season 4 Secrets of the Olympia Brewery
- Season 4 America's Hidden Training Camp
Mysteries of the Abandoned: Hidden America - Season 4 Episode 9 America's Hidden Training Camp
7.00 42 minutes A Military Base trains soldiers in modern warfare to help defeat the Nazis; a suburban basement becomes a major cog in the Detroit bootlegging scene; a brave woman leads a labor union against organized crime.
