Variety called this hilarious and insightful documentary "A sleeper date-movie or marital aid". This is the story of one simple invention, the vibrator, and its relationship to one complex human behavior, the female orgasm. The history of the vibrator and its medical use had virtually vanished until historian, Rachel Maines, researching needlework patterns in early 20th century women's magazines, ran across ads for electric vibrators. Piquing her curiosity, she traced the origins of this early electrified appliance and made an astonishing discovery. Under the guise of a medical treatment, Victorian doctors had used vibrators to relieve women of symptoms of hysteria by masturbating them to orgasm. Why did women need this treatment? Female sexual satisfaction was, and continues to be, misunderstood or, worse, ignored.