Rade Šerbedžija as Athos

Stephen Dillane as Jakob Beer

Rosamund Pike as Alex

Ayelet Zurer as Michaela

Robbie Kay as Young Jakob

Ed Stoppard as Ben

Rachelle Lefevre as Naomi

Nina Dobrev as Bella

Themis Bazaka as Mrs Serenou

Yorgos Karamihos as Ioannis

Dmitry Chepovetsky as John

Devon Bostick as Ben (Teenager)

Danae Skiadi as Allegra

Anastassia Anastassopoulou as Laundry Girl

Monika Schurmann as Jakob's Mother

Sarah Orenstein as Sara

Larissa Laskin as Irena

Maggie Huculak as Librarian

Jennifer Podemski as Grace

Fiona Highet as Marilyn

Marcia Bennett as Mrs. Taylor

Hailey Birnie as Woman at Party (uncredited)

Birgitte Solem as Ellen (uncredited)

Daniel Kash as Maurice

Thanos Sakellariou as Greek Priest