This is not your usual Hammer House film.
The Brenda character is perhaps one of the strangest in cinema. She's desperately naive to the point of delusion. Los in her own fantasy world of fairytale endings she struggles to engage in the realy of her new life in London. The dog kidnapping scene where Brenda transform into a fairytale character of her own creation is a perfect example of this.
The weirdness and disconnectedness of the characters of swinging early 70's party scene reflects the lucid dream like quality of the film. The film occasionally jumps to alternative scenes, sexual, ordinary, her mother back home, they all suggest that Brenda's decisions could have led her down a different path.
When it seems that Brenda's bizarre plan to find a husband is starting to pay off, she stumbles into another person's fairytale. Peter offers Brenda what she wants but in exchange he takes her personality, renaming her as a character in his own delusional fantasy.
What follows is a superbly sinister and uneasy relationship. The tension between Peter and Brenda moves between a kind of marriage of convenience, dark sexuality and childish fantasy.
A brilliant example of 70's British horror. Well worth a watch.