A local detective moves to the suburban police force to get away from the brutal crime scene seen by him as a Philadelphia homicide detective. Shortly after his arrival, there are a series of seemingly unrelated murders in the quiet middle-class township. Unbeknownst to the detective, there is a serial murderer afoot, who is both clever and brutal in his attacks. Four murders go unsolved followed by the death of an earlier victim who survived the attack initially. As the detective believes he is closing in, he is badly injured when a truck, laying in wait for him, crashed into his car on his way home from work. A clever scheme by the detective and local law enforcement to catch the murderer in a trap backfires.