AllMovie

In this suspense thriller, Stephen Boyd plays Miguel, who is clearly not in his right mind. He remembers killing his mother-in-law but cannot determine what happened to his wife Pilar (Marisa Mell). As far as he knows, she may have just run away. As the film opens, it is the servant's day off. Marta (also Marisa Mell), a good-looking young woman who is the spitting image of Miguel's wife, runs the gauntlet of his snarling dogs. He rescues her and puts her to bed in a very fatherly fashion. Later, she tries to seduce him, but he has some sexual dysfunction which causes her efforts to fail. Marta searches the house for Miguel's wife who is her sister. Among other things, she finds a room fitted out for torture but otherwise has no success. Later, she induces Miguel to join her in the search.