Plot: In Emeryville, the dwellers are frightened of a serial killer that carves the number thirteen on his victims. During a stormy afternoon, Sarah, the school counselor, allows the real-state agent, Andrew Byrd, to stay inside her house while waiting for his ride. Andrew is disputing the custody of his daughter, Samara, and shows signs that he is an unbalanced man during a conversation with Sarah. When the security system agent, John Denton, arrives in the house for maintenance of the alarm system, Sarah feels secure. However, when a mark with 13 is found in one room, Sarah realizes that she is in danger.
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