Pulse

A highly aggressive, paranormal intelligence thriving within the electrical grid system of Los Angeles, California is moving from house to house. It terrorizes the occupants by taking control of the appliances, killing them or causing them to wreck the house in an effort to destroy it. Once this has been accomplished, it travels along the power lines to the next house, and the terror restarts. Having thus wrecked one household in a quiet, suburban neighborhood, the pulse finds itself in the home of a boy's divorced father whom he is visiting. It gradually takes control of everything, injuring the stepmother, and trapping father and son, who must fight their way out.