Another great release in the Jess Franco Collection from Erwin C. Dietrich. 2 sisters (Pamela Stanford and Karine Gambier) live in a remote country estate, but one sister is a slave to the other! Milly (Gambier) is an incurable nymphomaniac whose ever-increasing urges demand constant satisfaction. Her physician, Dr. Barrios (Jack Taylor), realizes that she must have her desires fulfilled or else she may go mad and end up institutionalized. Nightly, her older sister Edna (Stanford), is forced to solicit men for Milly as prescribed by the Dr. Once the men are brought back to the estate they find themselves in a world of sex and depravity! Also stars Erwin Dietrich regular Eric Falk.