A tribe of Amazon women use a magnetic force to pull down airplanes flying over their island. They enslave all the men aboard the planes and use them as their sex slaves.
While serving in Vietnam, a demolitionist witnesses the brutal torture/rape/murder of a young woman...ultimately, he becomes a serial rapist and killer himself, preferring explosives as his murder weapon of choice.
An experimental serum turns a man into a fanged killer beast.
A mad doctor runs a sanitarium in the desert, where his hunchbacked servant whips women who are chained in the basement and cuts the legs off bodies so they'll fit in the caskets. ...