Mystery of the Riverboat
- Cast: Robert Lowery, Marjorie Clements, Lyle Talbot, Arthur Hohl, Oscar O'Shea
- Duration: 218 minutes
- Genre: Action, Crime
- Rating: 6/10
- Release Date: 1944-10-24
A movie serial in 13 chapters: Some swampland becomes valuable, and various factions squabble over ownership of it.
