Swiftly dissolves into a litany of brutally sadistic acts knotted together by a feeble whodunnit plot.

An over-violent and under-sincere story that strays from justice past revenge and into mindless vigilantism.

It's rare that you catch an acclaimed mainstream filmmaker dropping all pretenses and giving in to the desire to make pure pulp.

A usually sharp script, a firecracker turn from Chiwetel Ejiofor and a decent amount of suspense and surprise. There are worse directors than John Singleton who have switched focus to B-pictures with the right amount of substance.