The Viper Brothers: Prison Gang 13 (1972) is a Crime, Action film that follows part 3 in a long running (8+1 films) action/comedy/melodrama series about a pair of short tempered, amoral, but not evil chinpira (Bunta Sugawara and Tamio Kawachi) thinking too big of themselves. The Viper Brothers: Prison Gang 13 is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 7.0 out of 10 from 1 votes. Fans of crime movies may also want to explore similar titles below.