"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
Jack Kevan
Makeup Artist
Russell A. Gausman
Set Decoration
Lee Loeb
Screenplay
Charles Lamont
Director
John Grant
George Robinson
Director of Photography
Rosemary Odell
Costume Design
Robert Louis Stevenson
Novel
Bernard Herzbrun
Art Direction
Joan St. Oegger
Hairstylist
Howard Christie
Producer
Russell F. Schoengarth
Editor
Eric Orbom
Bud Westmore
Makeup Department Head
Abe Haberman
Grant Garett
Story
Sid Fields
Ray Romero
