According to contemporary articles in Los Angeles newspapers, Pat O'Brien and Robert Young were considered for the lead in this picture at various times during pre-production.
Harry Morgan plays the role of Lt Webb. Morgan had roles in both Dragnet 1967 (1967) and Oscar's Birthday (1972) which had Jack Webb serving as Sgt. Friday and producer.
Sam Wilson drives a 1941 Ford Standard Sedan; Lt. Webb drives a 1947 Dodge DeLuxe Sedan.
Will Price was making his feature film directorial debut after years as a dialogue director including The Hunchback of Notre Dame (1939) where he met and later married his wife Maureen O'Hara. The couple then realized their dream of having husband Will direct wife Maureen in a major feature after completing his feature debut here. This happened when Price was hired by Paramount Studio to direct the adventure saga Tripoli (1950) starring O'Hara.
Dick Powell, Cary Grant, Jane Greer, and cartoon characters Donald Duck, Gorgeous George and Dick Tracy are mentioned in the movie.