The film, which has already begun shooting in London and is set to be released in December 2011, stars Asa Butterfield as a 12-year-old boy who must solve the mystery of a broken robot. The fantasy features a script by Red's Tony-winning playwright, John Logan, and counts Jude Law, Richard Griffiths, Frances de la Tour, Sascha Baron Cohen, Ben Kingsley, Christopher Lee, Ray Winstone, Helen McCrory and Chloe Moretz among its cast. Mortimer appeared at the Atlantic Theater Company in Parlour Song and in the West End in The Merchant of Venice and The Light. Screen credits include "Shutter Island," "Lars and the Real Girl," "Match Point" and "The Pink Panther."

Stuhlbarg received a Drama Desk Award and Tony nomination for his work in The Pillowman, and an Obie for The Voysey Inheritance. Other stage credits include Hamlet, Measure for Pleasure, Old Wicked Songs, The Invention of Love and Cabaret. He received a Golden Globe nomination for his work in the Coen Brothers film "A Serious Man."