Mystery of the Riverboat (1944) is a Action, Crime film that follows a movie serial in 13 chapters: Some swampland becomes valuable, and various factions squabble over ownership of it. Mystery of the Riverboat is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 6.5 out of 10 from 2 votes. Fans of action movies may also want to explore similar titles below.