Jake Baxter takes a job as a repoman with hopes of living the quiet life. Plans go sour when he's whipped into supersonic action, involving a vicious crime lord, a mob of angry car owners, a sadistic porno ring and lastly a brutal, illegal and very lethal car race known throughout L.A.'s underworld as the "Slam Track."

Someone is killing off the female leads of the movie production "Bad Girls from Mars." The producers feel they should try to finish the film, even though they're making a lucrative amount from insurance payoffs, so they fly in European sex bomb Emanuelle as the new lead. Emanuelle immediately begins embarrassing the producers by leading a wild party life around town. Meanwhile the killings continue, and detectives try to stop the fiend responsible.

Five college women buy the old Hokstedter place for their new sorority house. They got it cheap because of the bloody incidents from five years before. They decide to stay in it for the night so they can meet the movers in the morning, but begin to get the creeps when the weird neighbor Orville Ketchum starts poking around. Shortly after the women take showers and consult a Ouija board they begin experiencing an attrition problem.

An invisible scientist escapes from an asylum and teaches high-school physics to nubile teens.