In Sean Cunningham's 1980 slasher "Friday the 13th," Jason Voorhees is little more than the subject of a notorious ghost story. Camp counselors at Camp Crystal Lake, New Jersey, loved to scare young campers by telling them the very true story of the developmentally disadvantaged who wandered off and drowned in the lake decades earlier. It seems that the counselors who were tasked with caring for Jason were too busy copulating to notice he was in danger. Years later, however, counselors are suddenly being systematically murdered by an unseen assailant. Is it Jason returned from the grave, murdering counselors as revenge?

In the first "Friday," it was revealed that Pamela Voorhees (Betsy Palmer), Jason's mother, had snapped and was killing counselors in honor of her dead son. In "Friday the 13th Part 2," however, it was revealed that Jason had been alive all along, and had grown to adulthood living in the woods,...