Catherine and her family are invited to stay for the week at the Yorke family estate, a massive piece of land in the countryside owned by Catherine's uncle, Alexander Yorke. When a mysterious accident takes the life of Catherine's mother and father, Alexander offers for her to stay with him until she gets well. Under the care of her uncle, his mysterious assistant, and Catherine's perverse cousin, Stephen (Martin Potter; Fellini's Satyricon), Catherine begins growing ever suspicious of her family's intent on keeping her at the estate. Soon she discovers that her family may be hiding dark secrets linked to their sinful past... Director Norman J. Warren's (PREY, TERROR) debut horror film, SATAN'S SLAVE remains one of the most shocking and controversial entries in the history of 1970s British horror. Filled with unflinching imagery of brutal violence and frequent nudity, the film suffered frequent censorship throughout its release history, including the shooting of a sanitized version of its brutal opening assault. Written by acclaimed British horror screenwriter David McGillivray (House of Whipchord) and luridly photographed in Techniscope, Vinegar Syndrome proudly offers SATAN'S SLAVE in its fully uncut and uncensored worldwide Blu-ray debut, in a new 4K restoration, and featuring a fresh commentary track with director Norman J. Warren.