Best known for directing several popular science-fiction films in the 1950s, Jack Arnold turned to blaxploitation with this gritty crime film. Fred Williamson stars as Shep Stone, who becomes a private detective after being suspended from the police department. The usual sleazy setpieces deal with porno producers (one of whom, Bret Morrison, was the voice of on radio), drugs, and murder. Teresa Graves ( ) co-stars with Rosemary Forsyth and 's Richard Anderson in this average, but entertaining potboiler. Williamson and Arnold re-teamed for the same year.