House on the Edge of the Park (1980)

Plot

A wealthy couple faces car troubles en route to a villa party and seeks help at a nearby mechanic’s shop, oblivious to the mechanic's dubious past. Once the mechanic and his mentally challenged assistant get their vehicle running again, the couple extends an invitation to the gathering as a gesture of gratitude. What begins as a simple act of kindness spirals into a chaotic night filled with unexpected terror, as hidden agendas and dark secrets unfold amidst the glitzy backdrop of the party.