Russell Crowe will join Leonardo DiCaprio in “Body of Lies,” the William Monahan-scripted adaptation of the David Ignatius novel that Ridley Scott will direct for Warner Bros. Donald De Line and Scott are producing; film shoots in the fall. Crowe will play Ed Hoffman, the manipulative CIA boss who teams with operative Roger Ferris (DiCaprio) to trap a dangerous Al Qaeda leader by planting a false rumor that the bomber is in cahoots with the Americans. Crowe has been working steadily with Scott since “Gladiator,” teaming on “A Good Year,” the recently completed “American Gangster” and the upcoming “Nottingham,” a Universal and Imagine drama that will go into production early next year. Crowe has been courted to play the CIA boss since DiCaprio signed on in April. He’s awaiting a polish by “American Gangster” screenwriter Steve Zaillian before formally committing.