Ray Collins, who plays Dr. Carey in this film, is one of several actors who played the title character in the "Crime Doctor" radio series.
Fans of The Three Stooges may recognize the same cheap studio sets and on-the-quick lighting we associate with their B&W shorts. Typical of the B pictures Harry Cohn's Columbia Pictures Gower Street lot ground out in the 1940s, Crime Doctor and many of the best Stooges shorts were shot during the same World War II years. Crime Doctor is one of the first films directed by Michael Gordon, who was from the Yale Drama School and The Group Theater with Elia Kazan, and who, after many years of being blacklisted during the McCarthy red scare era, eventually directed the Doris Day / Rock Hudson hit Pillow Talk.