Behind the Mask - Cast

Jack Holt

Jack Hart aka Quinn
Actor

Constance Cummings

Julie Arnold
Actor

Boris Karloff

Jim Henderson
Actor

Claude King

Arnold
Actor

Bertha Mann

Nurse Edwards
Actor

Edward Van Sloan

Dr. August Steiner / Dr. Alec Munsell / Mr. X
Actor

Willard Robertson

Capt. E.J. Hawkes
Actor

Thomas E. Jackson

Agent Burke
Actor

Martha Mattox

Hotel Ansonia Maid
Actor

Jessie Arnold

Eastland Hospital Nurse
Actor

Harry Tenbrook

Man in Black / Henchman in Boat
Actor