"As American policemen in London, Bud and Lou meet up with Dr. Jekyll and Mr. Hyde."
Bud Abbott
as Slim
Lou Costello
as Tubby
Boris Karloff
as Dr. Henry Jekyll / Mr. Hyde
Craig Stevens
as Bruce Adams
Helen Westcott
as Vicky Edwards
Reginald Denny
as Inspector
John Dierkes
as Batley
Eddie Parker
as Mr. Hyde (uncredited)
Patti McKaye
as Can-can dancer
Betty Tyler
Lucille Lamarr
Dante De Paolo
as Specialty dancer
Carmen De Lavallade
as Javanese dancer
Maisay Kawasuma
Henry Coden
as Javanese actor
Marjorie Bennett
as Militant woman
Isabelle Dwan
as Mrs. Penprase
James Fairfax
as Mr. Penprase
Harry Wilson
as Man Asking for Match
Harry Cording
as Rough Character in the Park
Charles Lamont
Director
John Grant
Screenplay
Lee Loeb
Robert Louis Stevenson
Novel
Howard Christie
Producer
George Robinson
Director of Photography
Russell F. Schoengarth
Editor
Bernard Herzbrun
Art Direction
Eric Orbom
Rosemary Odell
Costume Design
Jack Kevan
Makeup Artist
Joan St. Oegger
Hairstylist
Russell A. Gausman
Set Decoration
Bud Westmore
Makeup Department Head
Ray Romero
Abe Haberman
Sid Fields
Story
Grant Garett
