Characters played by Patric Knowles
Private Detective Jerry Church
Characters played by Lionel Atwill
Dr. Fish
Characters played by Anne Gwynne
Kit Logan Church
Characters played by Samuel S. Hinds
Dudley Crispin
Characters played by Mona Barrie
Eileen Crispin
Characters played by Shemp Howard
Det. Sgt. Sweeney
Characters played by Paul Cavanagh
John Crispin
Characters played by Edmund MacDonald
Det. Capt. Bill Hurd
Characters played by Mantan Moreland
Horatio B.Fitz Washington
Characters played by John Gallaudet
Ernie Paul
Characters played by William Gould
Dist. Atty. Mason
Characters played by Leyland Hodgson
Thomas- the Butler