Edited sentence: But no matter how the location or situation may change, everything continues to revolve around Don.The film deals with personal fear compellingly and realistically through its portrayal of a seemingly free man put between a rock and a hard place by his criminal history.The frothing Cockney gangster treats language like a man firing a machinegun, cursing constantly and threatening inventively cruel violence for the slightest imagined offence, and seems bereft of any sort of social barometer.The tension builds to critical mass, after which the film switches gears from taut character drama to the stylish, sleek and low-key gangster flick and then back again almost without any appreciable gap