Character Name : Jack Hart aka Quinn

Original Name : Jack Holt

Gender : Male

Character Name : Julie Arnold

Original Name : Constance Cummings

Gender : Female

Character Name : Jim Henderson

Original Name : Boris Karloff

Gender : Male

Character Name : Arnold

Original Name : Claude King

Gender : Male

Character Name : Nurse Edwards

Original Name : Bertha Mann

Gender : Female

Character Name : Dr. August Steiner / Dr. Alec Munsell / Mr. X

Original Name : Edward Van Sloan

Gender : Male

Character Name : Capt. E.J. Hawkes

Original Name : Willard Robertson

Gender : Male

Character Name : Agent Burke

Original Name : Thomas E. Jackson

Gender : Male

Character Name : Hotel Ansonia Maid

Original Name : Martha Mattox

Gender : Female

Character Name : Eastland Hospital Nurse

Original Name : Jessie Arnold

Gender : Female

Character Name : Man in Black / Henchman in Boat

Original Name : Harry Tenbrook

Gender : Male