House on the Edge of the Park

A posh couple, Tom (Christian Borromeo) and Lisa (Annie Belle), experience car trouble while driving to a party in New Jersey. They stop at a local mechanic's shop for assistance, where they meet Alex (David A. Hess) and his mentally challenged assistant Ricky (Giovanni Lombardo Radice). The couple invites them to the party as a thank-you, leading to an evening of mayhem.