The UK's movie ratings body has taken the unusual step of refusing outright to classify a new horror film - and warned there was a real risk of harm to viewers.
The film is a sequel to last year's stomach-churning Human Centipede about a mad scientist who grafts three kidnap victims together.
But the British Board of Film Classification (BBFC) has ruled no amount of cuts would allow them to give the new film - The Human Centipede II - a certificate and said the movie may fall foul of the Obscene Publications Act.
The original film was given an 18 certificate and was shown in cinemas, and film festivals, before being released on DVD.
Film distributors had applied to release the follow-up on DVD but its rejection means it cannot be legally supplied in the UK.
The BBFC concluded that the thrust of the film was the "sexual arousal of the central character at both the idea and the spectacle of the total degradation, humiliation, mutilation, torture and murder of his naked victims".
It said: "There is little attempt to portray any of the victims in the film as anything other than objects to be brutalised, degraded and mutilated for the amusement and arousal of the central character, as well as for the pleasure of the audience."
The BBFC said the film breached classification guidelines and "poses a real, as opposed to a fanciful, risk that harm is likely to be caused to potential viewers".
The first film caused a stir when it was released last year by Dutch director Tom Six but it was thought to be suitable for adult viewing.
The ratings body said that "although the concept of the film was undoubtedly tasteless and disgusting, it was a relatively traditional and conventional horror film".