Estudio en rojo Cast & Crew
Reginald OwenSherlock Holmes / Dialogue June ClydeEileen Forrester Warburton GambleDr. Watson Doris LloydMrs. Annabel Mary Murphy John WarburtonJohn Stanford J.M. KerriganJabez Wilson Wyndham StandingCapt. Robin S. Pyke Halliwell HobbesMalcolm Dearing Arthur EdesonDirector Of Photography Martin G. CohnSupervising Film Editor Hans WeerenSound Engineer Reginald OwenSherlock Holmes / Dialogue 
