Megan Turner, a rookie NYC cop, foils an armed robbery on her first day and then engages in a cat-and-mouse game with one of the witnesses who becomes obsessed with her.

A witness to a mob assassination flees for her life from town to town, switching identities, but cannot seem to elude Milo, the chief killer out to get her.

A deranged man hides in the attic of a new house and becomes obsessed with the unsuspecting family that moves in.

An atomic bomb falls in Siberia and the USA is blamed.