The Underground Man (1974) is a Crime, Mystery, Thriller, TV Movie film that follows a private detective goes after the kidnappers of his ex-girlfriend's son and becomes involved in a series of murders. The Underground Man is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 6.3 out of 10 from 3 votes. Fans of crime movies may also want to explore similar titles below.