The sheer potential offered up by the science fiction genre means that we so often see things that are otherworldly, things that shouldn't be possible, and things that can be brought to silver-screen life in an astonishing way. And then, well then there's those really, really gruesome and twisted corners of sci-fi that can easily turn your stomach.
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Honing on the more disturbing films in the history of sci-fi cinema, Bowen Revill got to highlight those tormented sci-fi offerings which have remained engrained in our brains long after watching them.