 Originally, a shot of Mrs. Voorhees grave appeared next to her sons grave  in the opening sequence.  Later, there was some dialogue in the police  station where Tommy asked why Jason wasnt cremated, and the sheriff  responded by saying "We were gonna, but some asshole paid to give Jason and  his mother a proper burial."	"Some asshole" is revealed in the final cut  scene (at the films end) to be Jasons father.