FBI agent Jake Malloy is pursuing a serial killer who specializes in killing police officers. Malloy’s former partner becomes one of the victims. While Malloy is at his partner’s home, the murderer calls Malloy from Malloy’s home while Mary, his girlfriend, is there.

The killer tells Malloy that he pursued him four years before for a series of prostitute murders; he is holding a grudge and is going to kill Mary. Malloy rushes home to find Mary dead. When the killer’s hideout is found, Seattle police and the FBI blockade the area before Malloy arrives. Malloy pursues the killer only to find that he appears to have committed suicide…