The erotic thriller is a film subgenre defined as a film that "combines romanticized, 'erotic' appeal with a dangerous 'thriller' narrative—a "pleasure/danger" principle". The elements of bodily danger and pleasure are central to the plot. Most erotic thrillers contain scenes of softcore sex, though the frequency and explicitness of those scenes varies. British academic Linda Ruth Williams described erotic thriller films as "noirish stories of sexual intrigue incorporating some form of criminality or duplicity, often as the flimsy framework for onscreen softcore sex".