For no apparent reason, ordinary people are randomly killing total strangers. Although there is no link between the murderers, they all seem to follow exactly the same ritual and pattern.
Lucas Kane becomes one of these murderers when he kills a stranger in the men's room of a restaurant. Finding himself in control of Lucas, the player is haunted by strange visions and the desperate need to find out what is happening to him. At the same time he must keep one step ahead of the police, especially Inspector Carla Valenti and her teammate agent Tyler Miles.