Holmes and Dr Watson investigate the legend of a supernatural hound, a beast that may be stalking a young heir on the fog-shrouded moorland that makes up his estate.<br /><br />Richard Greene - Sir Henry Baskerville<br />Basil Rathbone - Holmes<br />Wendy Barrie - Beryl Stapleton<br />Nigel Bruce - Dr. Watson<br />Lionel Atwill - James Mortimer M.D.<br />John Carradine - Barryman<br />Barlowe Borland - Frankland<br />Beryl Mercer - Mrs. Jennifer Mortimer<br />Morton Lowry - John Stapleton<br />Ralph Forbes - Sir Hugo Baskerville<br />E.E. Clive - Cabby<br />Eily Malyon - Mrs. Barryman<br />Lionel Pape - Coroner<br />Nigel De Brulier - Convict (as Nigel de Brulier)<br />Mary Gordon - Mrs. Hudson<br />Ian Maclaren - Sir Charles (as Ian MacLaren)<br />Brandon Beach - Ship Passenger<br />Leonard Carey - Hugo's Servant<br />James Carlisle - Ship Passenger<br />Jack Egger - Boy<br />Herschel Graham - Ship Passenger<br />Kenneth Hunter - Ship's Officer<br />Frank McLure - Ship Passenger<br />Vesey O'Davoren - Ship's Steward<br />Rita Page - Chambermaid<br />John Graham Spacey - Ship's Porter<br />Ruth Terry - Betsy Ann<br />David Thursby - Open Carriage Driver <br />Peter Willes - Roderick<br />Mary Young - Betsy Ann's Mother
