A highly unusual formula ("The Exorcist" meets "Enter the Dragon") is injected into routine martial arts film. Martial arts action (and there's plenty of it) and second rate special effects compensate for lousy acting. An innocent woman (Lucinda Dickey) is possessed by the spirit of an evil ninja assassin (David Chung), causing her to murder the police responsible for his "death." It's Sho Kosugi ("Enter the Ninja," "Revenge of the Ninja") to the rescue as he tries to rid the spirit and destroy the ninja once and for all ("Only a ninja can destroy a ninja"). Best in the series, but only one complaint: Kosugi has very little screen time. My evaluation: **1/2 out of ****.