[6] An American (John Shepperd) visits his fiancée (Lynne Roberts) and her father in their rural chateau at the same time a series of murders begins. The father’s brutish gardener with a criminal past is a prime suspect. And so is his socially awkward servant, an immigrant from Java who holds a childlike adoration for the bride-to-be. Dr. Renault’s Secret is Twentieth Century Fox’s attempt …