Black Christmas, also known as Black X-mas, is a 2006 horror film directed by Glen Morgan. The film is a remake of the 1974 horror flick of the same name. In the movie, Billy Edward Lenz (Robert Mann) is a maniacal killer who suffered years of torture from his mother. Many years later, he returns to his family home on Christmas Eve and finds it occupied by a group of sorority girls and their house-mother. The sorority girls, Kelli (Katie Cassidy), Dana (Lacey Chabert), Lauren (Crystal Lowe), Megan (Jessica Harmon), Heather (Mary Elizabeth Winstead), Melissa (Michelle Trachtenberg) and their house-mother, Ms. Mac (Andrea Martin), have no idea they are being watched by Billy. Billy came back to town with the intention of living in his home. Instead of politely asking the girls to leave, Billy begins to terrorize them. Will the girls leave when Billy warns them to, or will they fight to keep their home?