American actor William H. Ruhl made his first film in 1934, and his last in 1952. Seldom rising above bit parts, Ruhl showed up in one-scene assignments as detectives, lawyers, and the like. Someone over at Monogram must have liked Ruhl, else why would the actor have shown up in six of the studio's Bowery Boys features from 1946 to 1949? William H. Ruhl also appeared in various other Monogram series, including Charlie Chan and Joe Palooka.