TessListGSV
A recently executed murderer's soul possesses and inspires an ensemble of psychopathic killers to attack the city of Los Angeles over the course of one night, crossing each others' paths along the way.
A strange man crashes a party and asks each person to name who they hate. With some prodding, they all answer the stranger. When the named people die in horrible ways, the party-goers suspect that the stranger is a spree killer.