The Creeper Dr. Morgan and Dr. Cavigny star as a brace of scientists who return from the West Indies with a potent, phosphorescent serum that allegedly changes human beings into cats. Details Casts Galleries Posters Title The Creeper Release Date 1948-09-01 Runtime 01 Hours 04 Minutes Genres Adventure Horror Production Companies Bernard Small Productions Production Countries United States of America Eduardo Ciannelli... Dr. Van Glock... Onslow Stevens... Dr. Jim Borden... June Vincent... Gwen Runstrom... Ralph Morgan... Dr. Lester Cavigny... Janis Wilson... Nora Cavigny... John Baragrey... Dr. John Reade... Richard Lane... Insp. Fenwick... Philip Ahn... Ah Wong - Restaurant Owne... Lotte Stein... Nurse Maidie Halpern... Ralph Peters... Workman... David Hoffman... Andre Dussaud... John George... Waiter... Stuart Holmes... Medical Examiner... Original Size (1331x749) Original Size (960x1440) Original Size (500x750)