Gemma Arterton will star in 'Runner Runner'.
The 'Hansel and Gretel: Witch Hunters' actress will join Ben Affleck and Justin Timberlake in the thriller about online gambling.
She will play the love interest of Justin's character, a Princeton student cheated out of his tuition money playing online poker.
He then ends up working for the site's corrupt boss, portrayed by Ben.
'Lincoln Lawyer' helmer Brad Furman will direct while producers include Appian Way's Leonardo DiCaprio and Jennifer Davisson Killoran.
Other producers include Double Feature's Michael Shamberg and Stacey Sher, and Stone Village Pictures' Scott Steindorff, as well as Brian Koppelman and David Levien.
The movie will begin shooting in late June.
Recently Gemma, 26, was linked to a role in the Jeff Buckley biopic 'Mystery White Boy'.
She is in talks to play one of the late rocker's party-loving flings while Reeve Carey - who was the lead in Broadway's 'Spider-Man' musical - has already been confirmed for the role of Jeff.
British actor Harry Treadaway and Olivia Thirlby are also in the running for roles in the film, which has been adapted by Ryan Jaffe from David Browne's book, 'Dream Brother: The Lives And Music Of Jeff And Tim Buckley'.
Jeff tragically drowned in the Mississippi River in 1997 at the age of 30. His death was ruled as accidental.