Hatzic

I'm trying to remember a movie I saw several times on TV In the 1970's. It starred a famous blonde older movie star as the mother, and a young man who played her son, who was often in 70's made for TV movies. I thought the actress was Barbara Stanwyck but this movie doesn't seem to be listed in her bio. The younger actor always played smooth, creepy roles. It was a thriller where the young man had an obsessive relationship with his mother, and would murder for her or because of her - I think whenever he became attracted to a woman, he would eventually murder the woman because she was a threat to his feelings for his mother. They lived in a big mansion with a large staircase and at the end was a scene where I believe she finds out he is killing for her, and rewards him with incestuous affection.

Hatzic