Harrowing thriller about a hotwired ex-soldier (co-scripter Paddy Considine from Cinderella Man) who returns to his sleepy Irish village to dole out merciless revenge upon the booze- and drug-sodden hoodlums who abused his mentally handicapped younger brother (the astonishing Toby Kebbel).
James Wan (Saw) brings the ultra-violence to this gritty story of a suburban father (Kevin Bacon) who discovers the consequences of revenge after his son is murdered.
The perpetrators of this senseless killing are a multi-ethnic (and highly visible) gang of drug dealers and cutthroats led by the psychotic Billy Darley (Garrett Hedlund); when the case is thrown out on a technicality, Bacon takes a page from Charles Bronson's book and pursues a vigilante course to avenge his boy.
Things do not go according to Bacon's plan, which cues a series of frantic and well-executed action set pieces, most notably a parking structure chase that unfolds in a nearly unbroken take.
Bacon is excellent (as always) as the mild-mannered architect who discovers his inner killer the hard way, and Wan's knack for screen mayhem and unsettling atmosphere are well used here.