I saw just the end of a movie on tv in the 80s, don’t know if a tv movie or not. There was a blonde girl with hair in pigtails or plaits dressed and made up to look like a Swiss or German doll, she had a large knife, there was a young guy there too, I think he may also have been blonde. They were in a white room with blood on the walls. I think the girl had killed people, she killed the young guy and the film ended. I think it was shown on a Saturday night but not really late. I remember the ending so clearly but never have seen the movie since. I would like to know what it was about, what it was called and the chance to see it from the start.