A South London gangster emerges from three years in prison and becomes a bodyguard for a famous actress, only to be sucked back into the shady underworld by a ruthless crime lord in the gritty crime drama "London Boulevard" starring Colin Farrell.

Mitchel (Farrell) served his time in Pentonville Prison. Now that he's a free man, he's determined to keep it that way. His resolve not to fall back on his criminal past is weakened, however, when his longtime friend Billy (Ben Chaplin) offers him a place to stay in exchange for help with a quick and dirty job.

But just as it seems like the pas...