Sara is home alone on a stormy night when there is a knock at the door. Andrew, a real estate consultant, has stopped by regarding the sale of her house. Problem is, the house isndz?t for sale. Against her better judgment, she grants Andrew shelter from the rain.

But tension builds as Andrew, talking about his impending custody battle for his daughter, becomes more and more agitated. Sara finds herself in possible peril, until there is another knock at the door. John, a scripture-quoting home security technician, has stopped by to fix a fuse. But he may not be all he seems when a knife is found in his bag.