Two join trek down 'London Boulevard'
Keira Knightley, Colin Farrell join WIlliam Monahan pic
The duo join David Thewlis, Anna Friel, Ben Chaplin and Ray Winstone in the film, which Monahan adapted from author Ken Bruen's novel.
The movie centers on a London criminal newly released from prison who becomes involved with a reclusive young actress.
"Boulevard" is produced by Graham King under his GK Films banner alongside Monahan, former MGM executive Quentin Curtis and Tim Headington.
Monahan and King, who won Oscars after teaming on Martin Scorsese's "The Departed," most recently worked together on the thriller "Edge of Darkness" starring Mel Gibson.
Curtis, former MGM vp production, has a number of films in development, including "The Jury," to be directed by Marc Forster for Fox 2000, and "Getty," with Peter Berg attached to helm for Universal.
GK Films business partner Headington also is attached to produce "Boulevard," with Colin Vaines and Redmond Morris on board as executive producers.