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William H. Macy, Joan Allen Join Brie Larson in ‘Room’

Jacob Tremblay will play Larson’s character’s son in Lenny Abrahamson’s adaptation of Emma Donoghue’s bestselling novel

Production has commenced on┬áLenny Abrahamson’s “Room” starring Brie Larson.

Jacob Tremblay has signed on to play Larson’s character’s son, while Joan Allen, William H. Macy, Sean Bridgers, Tom McCamus and Megan Park round out the cast.

Based on the Emma Donoghue novel of the same name and told through the eyes of 5-year-old-Jack (Tremblay), “Room” follows the boy and his mother who have been held captive for years. To Jack, Room is the world. It’s where he was born, it’s where he and his Ma (Larson) eat, sleep, play and learn. But while it’s home to Jack, to Ma it’s a prison. Through her fierce love for her son, Ma has managed to create a childhood for him in their 10-by-10-foot space. But as Jack’s curiosity is building alongside Ma’s own desperation, she knows that Room cannot contain either indefinitely.

Element Pictures’ Ed Guiney is producing with David Gross. Executive producers are Andrew Lowe for Element Pictures and Jeff Arkuss and Jesse Shapira for No Trace Camping. Emma Donoghue, Rose Garnett and Tessa Ross also serve as executive producers.

A24 has acquired rights to the film in the U.S., and Elevation Pictures is distributing the film in Canada.