Matt Damon as George Lonegan

Cécile de France as Marie Lelay

Bryce Dallas Howard as Melanie

Thierry Neuvic as Didier

Cyndi Mayo Davis as Island Hotel Clerk

Lisa Griffiths as Stall Owner

Jessica Griffiths as Island Girl

Ferguson Reid as Rescuer

Derek Sakakura as Rescuer

George McLaren as Markus/Jason

Frankie McLaren as Markus/Jason

Lyndsey Marshal as Jackie

Jay Mohr as Billy

Rebekah Staton as Social Worker

Declan Conlon as Social Worker

Charlie Creed-Miles as Photographer

Richard Kind as Christos

Claire Price as Marcus' Teacher

Franz Drameh as Teenager

Marcus Boyea as Teenager

Niamh Cusack as Foster Mother

George Costigan as Foster Father

Mathew Baynton as College Receptionist

Paul Antony-Barber as Nigel

Selina Cadell as Mrs. Joyce

Derek Jacobi as Derek Jacobi

Tim FitzHigham as Bearded Author

Marthe Keller as Dr. Rousseau

Céline Sallette as Secretary

Mylène Jampanoï as Reporter Jasmine

Stéphane Freiss as Guillaume Belcher

Laurent Bateau as TV Producer

Calum Grant as Factory Worker

Steve Schirripa as Cooking Teacher 'Carlo'

Joe Bellan as Tony

Jenifer Lewis as Candace

Tom Beard as Priest

Andy Gathergood as Jackie's Friend

Helen Elizabeth as Jackie's Friend

Jean-Yves Berteloot as Publishing Executive Michael

Surinder Duhra as Islamic Teacher

Sean Buckley as Dr. Meredith

Audrey Brisson-Jutras as Hospice Receptionist

Jess Murphy as Dying Woman

Augustina Amoa as Customer