AllMovie

A stormy night sets the stage for suspense in this tale of a woman stuck in a house with two strangers as news of a serial killer has all the locals locking their doors. There's a maniac on the loose; each one of his victims has been found with the number 13 carved into their chests. As the dark clouds roll in and the rain starts to fall, Sarah hears a knock at her front door. Standing there in downpour is Andrew, a real estate consultant who's come to inquire about her house. Despite realizing immediately that her house isn't on the market, Sarah agrees to let Andrew inside until the rain subsides. But there's something else that isn't quite right about Andrew, too; he's embroiled in a bitter custody battle and the more he talks about it the more his blood boils. Just when it seems as if Andrew's about to snap, God-fearing home security tech John shows up to replace a fuse. When Sarah notices a knife in John's bag, she begins to wonder if he might be the killer that's got the whole town on edge. Realizing that one false move could easily be her last, Sarah enters into a vicious game of cat-and-mouse with her two suspicious houseguests as the tensions build inside, and the weather rages outside.