80’s horror can at times be divided into two age group camps: Adults and children, and then others that just deal with teens or young adults acting like teen. Hack-o-lantern starts out like the former, but then switches gears half way through. The movie begins with a child and creepy grandfather meeting at a pumpkin patch. The grandfather apparently has some otherworldly plans for the boy, and after giving him a pumpkin to carve, the boy starts exhibiting behavior that his parents don’t like. He throws pumpkin guts at his sister, pretends to shoot her with a toy gun, and then cuts his hand while stating that blood tastes good. When asked, he says that blood is good for him according to his grandfather. This prompts his father to confront the grandfather, only to find him in a satanic circle, but is soon killed so the boy could continue being pushed towards whatever this cult wants.
And with as much exposition these music videos provide, they don’t explain the appearance of another sibling who suddenly shows up in the present. This is apparently the good son who ended up being a cop. The sister just ended up being a tramp, so she apparently took the middle ground.
This leads to zany 80’s hijinx like the Sheriff making out in a cemetery while his girlfriend holds hands with a corpse (yet doesn’t, nor ever realizes the mistake), a blond gets a pentagram branding on her butt, and then strips at a costume party in front of everyone, much to the lack of any reaction from the audience in attendance. Although there doesn’t seem to be any branding on her, so maybe it’s just yet another platinum 80’s blond willing to go fully nude for this silly movie. But no time to ponder that, as we move to a random street comedian who we’ve never seen before giving a routine that goes on waaaaay too long, but then abruptly ends.
And okay sorry, we do have to resume random scenes at the costume party as we bear witness to a snake dancer in her 50’s. This party attracts all sorts and since the sister wants to find her good brother, they have to endure pointless scenes that are sort of Halloweeny. However we do get to see a death by overtightening a corset death, but it’s ruined by a followup stabbing. I really don’t see the point. More bodies pile up, and when the masked madman is revealed, it’s the grandfather which isn’t a huge surprise seeing as he ran out of the barn with that mask in his hands.