Cyd Hayman

Edwin Antony (Hywel Bennett) is emasculated in an accident which kills a young philanderer. Doctors successfully replace his member with that of the dead man, but refuse to tell him the full story of the organ's origin. So Edwin begins a search which takes him to the philanderer's wife - and also to his many, many girlfriends... (imdb)

An English family of six takes in a pregnant woman who disappears shortly after giving birth. They raise the baby girl as their own, but over the years the strange deaths of their children make them consider whether the little girl is more than she appears. (imdb)