It's bad enough that the lifts don't work, but now an unknown sniper is picking off the occupants of a bleak tower block.
Sheridan Smith swaggers convincingly as a tough single woman who is tasked with leading a motley bunch – including an alcoholic (Russell Tovey), a former soldier (Ralph Brown) and a hoodlum (a scene-stealing Jack O'Connell) – to safety. This cheap British thriller is blessed with admirable energy and quite a bit of tension.
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