Barbara Kline

A nerdy guy mixes up a magic formula and becomes invisible whenever he sneezes. He uses his power of invisibility to sneak into his neighbors' bedrooms at night when their husbands aren't home and have his way with them.

After Vickie was raped, she left her parents and her husband and throws herself into various sexual adventures.

A crazy mountain-man shoots down a small passenger plane. He then proceeds to stalk, torture and kill the survivors.