Raymond Gérôme
as Sherlock Holmes
André Haber
as Watson
Christian Alers
as Le docteur Mortimer
Jean-Pierre Gernez
as Sir William Baskerville
Bernard Musson
as Barrymore, le maître d'hôtel
Christiane Moinet
as Eliza, la femme de Barrymore
Jean-Jacques Steen
as Jones, le cocher de Londres
Robert Bazil
as Billy, le second cocher
Pierre Hatet
as Stapleton
Colette Teissèdre
as Beryl
Liliane Patrick
as Laura Lyons
Bernard Durand
as Le valet de chambre
