Abbott y Costello conocen al Dr. Jekyll y Mr. Hyde

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

Lucille Lamarr

Can-can dancer

Dante De Paolo

Specialty dancer