Black Boots, Leather Whip (1983)
DramaMystery
Director: Jesús Franco
Al Pereira is hired by Lina, the wife of a wealthy man, to recover some compromising photos. She has sex with him by way of a retainer. In the course of his investigation, Al is obliged to commit a couple of murders... and he's left holding the bag when Lina turns out not to be what she seems to be.
