I joined this site to get help with the name of a movie I saw maybe in the 80’s on TV. It was in color and in English. As I recall a man and his wife and I think a son are held hostage in their home or cottage by 3 men. After psychologically terrorizing them the wife is seduced by the leader while the husband is helpless. I think the husband finally grows one and kills them but I don’t recall. Thanks in advance.