The sad Lysa Thatcher gives one of her best performances as the lonely teenager Sandy, who lives with Linda Vale, her divorced mother, who is more interested in erotic games with her boyfriend Robert (Jamie Gillis) than in raising an emotionally confused girl on the verge of adulthood. While eavesdropping on her mother's sex, Sandy masturbates herself to sleep. But the next day, Robert interrupts the girl's morning shower and attempts to seduce her in a wonderfully tense sequence, interrupted by her mother's intrusion. Sandy decides to run away to New York to join her twin sister Denise, who, we are told, left home after a similar incident with Robert. Howard Winters, AKA "Cecil Howard," was one of the most ambitious filmmakers in the history of adult cinema. While many of his contemporaries were content to produce films that roughly resembled what was emerging in mainstream cinema, Howard pushed the envelope, constructing complex plots, eliciting exquisite performances from porn professionals, and shooting and editing everything with the efficiency any major studio could offer at the time. This extraordinary erotic masterpiece cannot be praised enough, possessing a psychological richness that very few mainstream films, let alone adult films, can hope to match, evolving in unexpected ways, delivering an emotional low blow that should leave most first-time viewers stunned.