Based on the memoir by Jeannette Walls, the film stars Brie Larson chronicles the life of a successful New York-based journalist all the way back to her poverty-filled childhood, with Woody Harrelson and Naomi Watts playing her parents. When she was a child, her family constantly moved to a new town due to her father's inability to find a stable job.
"They did a spectacular job bringing to life a complicated story, there's so many nuances", Walls tells PEOPLE of watching her story unfold on screen.
Cretton put Larson on the map with his 2013 film in which she played a supervisor at a group home for teenagers.
At one point, an exasperated Rose Mary's shown having to point out to her husband that 'The kids are exhausted of moving to a new town every time you lose a job'. After enduring an impoverished, itinerant childhood that saw them scampering around the western part of the U.S., Walls and her three siblings escape one by one to NY and stake out a stable life. But even that new life was threatened when she learned that her parents had followed her to the Big Apple and started squatting in a vacant building nearby. "But the degree to which he captured my father was breathtaking".More news: Celtics win NBA lottery, Lakers get No. 2 pick
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An aging Rose Mary is depicted telling the adult Jeannette: 'You have a right to be angry, but I know you love him. But in reality, that number should be two with her flawless performance in Destin Daniel Cretton's Short Term 12.
"I hope that in seeing my story, it makes people think about what they've been through", she says. "I think that's the magic of storytelling".
The Glass Castle is set for release on August 11. But the film will also tell a true story about a very real - and very compelling - woman: Jeannette Walls, who penned the 2005 memoir of the same name from which The Glass Castle is adapted.