Brie Larson Stars in First 'Room' Trailer - Watch Now!

Brie Larson stars in the heartbreaking trailer for Room, the film adaptation of the best-selling novel by Emma Donoghue.

The 25-year-old actress stars as a mother raising her child in captivity while trapped in a shed by a captor.

Joan Allen and William H. Macy also star in the drama, which is set to be released on October 16, 2015 in the US.

Brie is gaining lots of recognition lately – she is currently starring in this summer’s hit Trainwreck alongside Amy Schumer.