Summary: Slim and Tubby are American cops in London to study police tactics. They wind up in jail and are bailed out by Dr. Jekyll. Jekyll has been murdering fellow doctors who laugh at his experiments. He has more murders in mind. At one point the serum that turns Jekyll into the murderous Hyde gets injected into Tubby. (imdb)

Poster submitted by Gauntlet

Genres: Comedy, Sci-fi, Horror, Mystery

Country: USA

Directed By: Charles Lamont

Written By: Howard Dimsdale, Sid Fields

Starring: Boris Karloff, Reginald Denny, Bud Abbott, Lou Costello, Helen Westcott, Craig Stevens

More information at the Internet Movie Database