Frankenhooker

Jeffrey Franken, a young man who lives in Ho-Ho-Kus, New Jersey, is a power plant worker and an amatueur scientist who specializes in bioelectricity. He is about to marry his fiancée Elizabeth. At the birthday party of Elizabeth's father, Jeffrey presents him with an automatic lawnmower as a gift, but when Elizabeth tries to demonstrate it, she is caught in its path and gruesomely killed.