House on the Edge of the Park (1980)
When two low-lives gate crash a party, and are mocked by the posh hosts, they decide to get their revenge by subjecting the guests to various forms of torture and violence. new york city, robbery, rape, sadism, degradation, kidnapping, hostage, revenge, serial killer, torture, car accident, one night, serial rapist, rape and revenge, video nasty, genital mutilation, lesbian
ETC.
