"The laughs are twice as MONSTER-OUS as ever before!"
As American policemen in London, Bud and Lou meet up with Dr. Jekyll and Mr. Hyde.
Some links on this page are affiliate links. We may earn a commission on purchases made through them, at no extra cost to you. Learn more.
Bud Abbott
Slim
Lou Costello
Tubby
Boris Karloff
Dr. Henry Jekyll / Mr. Hyde
Craig Stevens
Bruce Adams
Helen Westcott
Vicky Edwards
Reginald Denny
Inspector
John Dierkes
Batley
Eddie Parker
Mr. Hyde (uncredited)
Patti McKaye
Can-can dancer
Betty Tyler
Can-can dancer