The daughter of an English politician keeps having recurring "nightmares" in which she makes love to a bisexual nympho who lives downstairs and conducts all-night LSD orgies. When the dreams become more violent, the neighbour turns up dead, and Florinda is the main suspect. Did she actually commit the murder she dreamt about? Is she being framed by her philandering husband? The complex plot unfolds amidst red herrings, outlandishly druggy dream sequences and lesbian hanky panky, all taking place in swinging late-1960's London. Sexy, hypnotic and with a score by Ennio Morricone, this is classic Giallo.