Stephen Graham Walks “London Boulevard”

British thesp Stephen Graham (“Public Enemies,” “Season of the Witch”) has joined the cast of the romantic drama “London Boulevard” for GK Films says The Hollywood Reporter.

The story revolves around a romance between a former con (Colin Farrell) and an actress (Keira Knightley). Graham will play the lead detective pursuing the con.

William Monahan makes his directorial debut on the film. Graham, who played Baby Face Nelson in “Public Enemies”, will portray Al Capone in the upcoming HBO pilot “Boardwalk Empire”.