Visible crew/equipment: A boom mic is visible at the top of the screen in one of the alternate endings where a mortician comes to get the body of Billy from the coroner.
Black Christmas (2006)
Ending / spoiler
Directed by: Glen Morgan
Starring: Mary Elizabeth Winstead, Michelle Trachtenberg, Lacey Chabert, Katie Cassidy
Most of the murders commited in the house were not by Billy but his half-sister/daughter Agnes, hence her M.O. of duct taping her victims heads, then gouging out their eyes (which is what Billy did to her back when she was eight). By the end of the night only Kelli is still alive, Kyle and Leigh having joined the other deceased house occupants. Billy dies of his burns as his home goes up in flames while, Agnes is electrocuted when the paddles on a defibrillator on max power is used on her head.
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More mistakes in Black Christmas
Dana Mathis: Are you high? It's freezing out there.
Trivia: The sorority mom, Andrea Martin, is also one of the girls in the original "Black Christmas". Her name in the original was Phyllis.
More questions & answers from Black Christmas
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Answer: Billy's mom is insane and does not possess a fully rational mind.
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