attic to his death by the assailant, who is revealed to be Agnes, now an adult. As Billy enters the attic, Kelli and Agnes struggle, leading the two of them into the empty space between the walls of the house. As the killers converge toward Kelli, Leigh helps her escape before they start a fire, leaving Billy and Agnes to burn to death. Later, as Kelli and Leigh recover at the hospital, Billy, who is partially burned, kills the morgue assistant. While Kelli goes for an x-ray, Agnes appears in her hospital room and kills Leigh. When Kelli returns to her room, Agnes appears through the ceiling and attacks her, but Kelli uses a defibrillator to kill Agnes. Moments later, Billy enters through the ceiling and chases Kelli to the stairwell. They briefly fight, ending with Kelli pushing Billy off the railing where he is subsequently impaled on the tip of a Christmas tree, killing him. Cast Production Writing After his debut feature, Willard (2003)—a remake of an earlier 1971 film—failed to perform well at the box office, Morgan was approached by Dimension Films to write and direct a remake of Black Christmas (1974). Morgan was a fan of the original film, and cited it as a predecessor to the modern slasher film, which influenced his decision to commit to the remake. Star Crystal Lowe noted Morgan's admiration and aim to "take the film to a different level", while "respecting the fact that [the original] was a great movie to begin with". In conceiving a new script, Morgan had intended to rework elements of the original film that were left ambiguous or implied, such as the cryptic phone calls received by the sorority house. While writing the screenplay, Morgan received input from the film's original director, Bob Clark, who also signed on to co-produce the remake. Clark gave Morgan his "blessing", stating in an interview that the remake was "still Black Christmas", but explored new subplots that had not been fleshed out in the 1974 film. Morgan created an extensive subplot for the film's killer, Billy, which introduced a secondary killer in Billy's younger sister, Agnes (in the original film, the names Billy and Agnes figure prominently in the obscene calls received by the sorority sisters). In writing the character of Billy, Morgan was inspired by the life of Edmund Kemper, a real-life serial killer who as a child had