Mum & Dad

Mum amp Dad is a 2008 British horror film by director Steven Sheil. Its premiere was on August 22, 2008 during the London FrightFest Film Festival. One day later it was shown during the Fantasy Filmfest in Germany. The film is the directors debut of Steven Sheil.

The following night Lena manages to break free from the restraints of her bedroom while the family is sleeping. She makes her way to the torture room and finds a staircase up to an attic, where she finds a mentally ill girl in a bed. The girl begins to struggle but Lena consoles her. In another room she finds a man who is being restrained, he too begins to struggle, almost getting her caught but calms him down and finds a weapon.The next morning, Birdie enters Lenas room and tells her its Christmas. She goes downstairs to find the man crucified on the wall, and the mentally ill girl in a chair. Dad tells Lena that he knows she broke free the previous night and saw the girl. He explains that the girl is his daughter and that she was a spastic because the umbilical cord got wrapped around her neck during birth and he had to bite it off with his teeth, implying that the birth didnt occur under medical supervision. The family proceeds to open a series of inappropriate Christmas presents. However, Mum neglected to buy a present for Dad so she tells him that he can have Lena for Christmas. ........

Source: Wikipedia