Dark Purpose

Dark Purpose is a 1964 film directed by George Marshall and starring Shirley Jones, Rossano Brazzi, and George Sanders.

The count lives there with Cora, a young woman suffering from memory loss, whom he claims to have taken in like a daughter after her skiing accident. Karen falls in love with the count, but Cora wants her gone. She later confides to Karen that she is not Paolos daughter but his wife. He is slowly poisoning her so he ultimately can inherit her familys money, Cora says, but Karen isnt sure whether to believe her story.Cora is found dead. The police believe it to be a suicide, but evidence at the scene leads Karen to believe that Paolo was indeed responsible for the young womans death. It leads to a confrontation and violent struggle. A vicious watchdog tries to protect his master, but instead knocks Paolo into a fountain, where he drowns. ........

Source: Wikipedia