Refusing to be halted even by the death of its cancerous villain Jigsaw (Tobin Bell), the fifth instalment of the B-movie horror juggernaut was shot in just over a month by the production designer of the last three instalments. The plot is cloaked in secrecy, the premise remains the same: another gleefully sadistic hack-job from a franchise that’s devolved with cynical nous into a hi-concept conveyor-belt of diabolical torture-porn set-pieces.

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