Continuity mistake: The handle of the machete Jason stabs both grave digger guys with changes between shots. As he stabs the 1st guy, the handle is tripoint, but as he stabs the 2nd guy through the neck then pulls back, the handle now has a rounded end like a wooden peg.
Continuity mistake: As Tommy reaches Jason's grave, he hears laughter and voices coming from the woods. As the voices move closer we see lights in the clearing. Tommy runs off in the bushes to hide. Moments later, two guys with flashlights and shovels suddenly rush in, from the opposite left, instead of the clearing path at the right, from where they were.
Continuity mistake: While Eddie is being killed, in the second shot, there's a blood driblet on his bottom lip. In the next shot, his bottom lip is clean without any blood residue.
Continuity mistake: When Lana is hit by the axe, it hits her horizontally, but in the shot of her corpse, it is shown vertically.
Continuity mistake: After Pam runs out of the house towards the barn, she sees Roy coming, and then she trips, as she crawls her shirt sleeves are rolled up, but they weren't before she tripped.
Answer: Several possibilities: 1 The mother requested he not make any contact, 2 They could've moved away, and he lost contact until then, 3 He may have been drafted into the army, and she could've divorced him during his time away and moved into whatever state this is located.
Rob245