Fredric March character Dr. Henry Jekyll / Mr. Edward Hyde
Miriam Hopkins character Ivy Pearson
Rose Hobart character Muriel Carew
Holmes Herbert character Dr. John Lanyon
Halliwell Hobbes character Brig. Gen. Sir Danvers Carew
Edgar Norton character Poole
Tempe Pigott character Mrs. Hawkins
Leonard Carey character Briggs, Lanyon's Butler (uncredited)
Sam Harris character Party Guest (uncredited)
Boyd Irwin character Police Inspector (uncredited)
Arnold Lucy character Utterson (uncredited)
Murdock MacQuarrie character Dissenting Doctor at Lecture (uncredited)
Eric Mayne character Lanyon's Associate at Lecture (uncredited)
Robert Adair character Ivy's Admirer at Music Hall (uncredited)
Pat Harmon character Music Hall Customer (uncredited)
John Rogers character Music Hall Waiter (uncredited)
G.L. McDonnell character Hobson, Carew's Butler (uncredited)
Douglas Walton character Blonde Student (uncredited)