Il dottor Jekyll

Fredric March

Dr. Henry Jekyll / Mr. Edward Hyde

Miriam Hopkins

Ivy Pearson

Rose Hobart

Muriel Carew

Holmes Herbert

Dr. John Lanyon

Halliwell Hobbes

Brig. Gen. Sir Danvers Carew

Edgar Norton

Poole

Tempe Pigott

Mrs. Hawkins

Leonard Carey

Briggs, Lanyon's Butler (uncredited)

Sam Harris

Party Guest (uncredited)

Boyd Irwin

Police Inspector (uncredited)

Arnold Lucy

Utterson (uncredited)

Murdock MacQuarrie

Dissenting Doctor at Lecture (uncredited)

Eric Mayne

Lanyon's Associate at Lecture (uncredited)

Robert Adair

Ivy's Admirer at Music Hall (uncredited)

Pat Harmon

Music Hall Customer (uncredited)