Heather Stephenson Snell is a well-educated psychotherapist by day, and a hard-laced biker gang leader by night. After a failed courtship with her lover, Heather wants revenge, and she sets her sights on her ex-lover's wife, Diane Lomax. Posing as a trick-or-treater on Halloween night, Heather attempts to shoot Diane with a shotgun, but winds up shooting a neighbor instead.
Meanwhile, in the 1890s, Anne Bradley becomes infatuated with married Utah Senator Arthur Brown. The two begin an affair, but Arthur is eventually forced to choose between Anne and his wife. When his wife dies, Arthur breaks up with Anne too. Anne responds by shooting Arthur to death.
And Brittany Norwood is a career thief, who lost her college scholarship by stealing from her teammates. Her thefts continue as she works for a Maryland clothing store. When Brittany's supervisor catches her shoplifting from the store, Brittany devises a brutal plan and commits a torturous murder.