Medvirkende i Behind the Mask
Jack HoltJack Hart aka Quinn Constance CummingsJulie Arnold Boris KarloffJim Henderson Edward Van SloanDr. August Steiner / Dr. Alec Munsell / Mr. X Willard RobertsonCapt. E.J. Hawkes Thomas E. JacksonAgent Burke Martha MattoxHotel Ansonia Maid Jessie ArnoldEastland Hospital Nurse Harry TenbrookMan in Black / Henchman in Boat John Francis DillonRegissør Jo SwerlingManusforfatter Ted TetzlaffDirector Of Photography Edward SlomanAssisterende regissør 
