Three young women have been brutally assaulted and murdered in the city of Philadelphia. Lieutenant William Fogarty, a time-toughened cop hardened by personal tragedy, is shocked by the brutality of the crimes. His only lead comes from medical examiner Josef Tanaka. Half Japanese and half American, Tanaka, a skilled practitioner of the martial arts, claims to recognize the method used in the attacks, a karate strike known as nukite, or spear hand....