• Actress Hannah Murray attends The 22nd Annual Screen Actors Guild Awards at The Shrine Auditorium on January 30, 2016 in Los Angeles, California.

Actress Hannah Murray attends The 22nd Annual Screen Actors Guild Awards at The Shrine Auditorium on January 30, 2016 in Los Angeles, California. (Photo : Getty Images for Turner/Christopher Polk)

Actress Hannah Murray, who plays Gilly on HBO's "Game of Thrones," has joined the cast of Kathryn Bigelow's untitled Detroit project. The upcoming historical crime drama is based on true events happened amid the 1967 Detroit riot.

Although her character is being kept under wraps, the 27-year-old English actress will play a key role in the drama, The Hollywood Reporter reported. She will join previously announced stars John Boyega, Jack Reynor, Ben O'Toole, Anthony Mackie, Jacob Latimore, Kaitlyn Dever and more.

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Details of the upcoming drama are being kept closely under wraps. Nonetheless, it was learned that the drama's script, which was penned by Mark Boal, is set against the backdrop of the staggering riots that occurred in Detroit more than five summer days in 1967.

Both Boal and Bigelow will produce the drama along with Annapurna Pictures' Megan Ellison and Matthew Budman. At the end of July, the untitled Detroit project had started principal photography in Boston, with a few scenes filmed inside the Dedham District Court in Dorchester, Massachusetts and in Brockton, Massachusetts.

In addition, the construction has been in progress on Frederick Douglass Avenue in Brockton, which is being transformed to resemble a city block in Detroit around 1967, Boston Globe Media reported. Filming in Brockton is expected to take place later this month.

"It looks like they are creating 1960s storefronts; a series of small businesses," Brockton City Councilor-at-Large Winthrop H. Farwell, Jr. told the news outlet. "They are putting up signs and doing all the stuff Hollywood does to transport you back in time. It is pretty neat to watch Hollywood come to Brockton... I think it's going to work out pretty well."

Albeit no studio is attached yet, a release date is expected to be in 2017, marking the 50th anniversary of the Detroit riots. More details about the project will be revealed soon.

Murray began her acting career with Bryan Elsley and Jamie Brittain's teen drama, "Skins." She then starred in the black comedy "In Bruges," "Why Didn't They Ask Evans?" and "Womb."

Check out Murray as Gilly in HBO's "Game of Thrones" below: