Twice Dead (1988)

A family inherits a home and moves in sight unseen, which is unfortunate since it's the hangout for a local gang, filled with junk, and lacks utilities. It is also the former home of Tyler Walker, an olde tyme magician who committed suicide after his beloved assistant - who is the families great aunt - left him for another man.

Rumors are the house is haunted, and indeed Tyler's ghost still haunts the third floor, which is filled with his possessions including a life size mannequin of the great aunt. Strange things happen, such as a noose wrapping itself around Scott's neck in the middle of the night, but none of the other family members believe there is a ghost present. Robin is the spitting image of her great aunt, and Tyler's ghost starts to help the family protect themselves from the gang of toughs, who consist of Silk, Crip, Stoney, Candy, Melvin, and two others.

Mom and Dad head back to Boulder to deal with some business problems, leaving Scott and Robin alone in the huge mansion, which is a real smart thing to do considering the gang has been stalking them. It's even more ridiculous as there had just been an incident in the middle of the night where the gang showed up in halloween masks, killed Robin's cat and nailed it to the backdoor, tried to rape Robin, and beat the hell out of Scott. Of course, the police won't do anything because no one actually saw the gangs faces. Yes, but let's leave the kids alone in the house. They'll be fine.

Scott and Robin decide to scare the gang off, which seems insane considering that something as harmless as asking the gang to stop hanging out at their home had made them targets for stalking and harrassment. The kids concoct an elaborate plan to scare the hell out of everyone and succeed. But instead of making the gang leave them alone, it just makes Silk even angrier and more interested in making them pay for humiliating him.

Late one night, an uncalled for pizza delivery guy shows up on their doorstep. Since it's the last stop of the night, the delivery boy says he'll sell it to them for five bucks as he'll just have to trash it otherwise. Scott agrees and is soon eating pizza and drinking coke, which oddly enough came in a container that looks like a cross between a paper milk carton and a dixie cup. Was soda ever really sold in this type of odd container?

Later Scott wakes up in a daze to find the entire gang partying in his living room. Seems the whole pizza ploy was arranged by Silk who put "liquid lude" in the coke carton. Crip goes upstairs with Robin, while the gang wreaks havoc downstairs, complete with the extremely corpulent Melvin repeatedly running over Tyler's mannequin with his motorcyle. Tyler just won't stand for this, and the gangs downfall begins.

Something to note: in the beggining of the film when the family is driving in the car, the close up scenes of the two kids appear to be two entirely different actors that closely resemble them.