Generate a question that has the following answer: Peter for the following movie plot: Summer (Ashley Greene) has run away from home and is searching for her father who had abandoned her and her mother when she was very young. A policeman catches her red-handed while she is attempting to steal from a store. She escapes from the policeman with the help of stranger, Peter (Tom Hoxey). She hooks up with him for a one-night stand and to her horror, he and his mother happen to be psychopaths. Peter catches young girls off-guard and brings them down to his basement where he has a human garden which is downright horrific. Here he subjects them to inhuman torture if the girls try to escape. Summer tries to escape, but cannot and decides it is better to join them rather than knowingly inflicting harm. During the course of her stay, Peter's father comes home and she finds out he is her father also. But her long awaited fairytale reunion is marred by the cold-hearted father who decides to enjoy her young ripe body, rather than enjoying her presence. Peter is bodily harmed when he decides to intervene. Her father takes her away to a secluded area where there is only a woman, whom he plans to finish off. But, Summer manages to escape and kill him.
Summer's father is also the father of whom?