An actress who was born in Montana will star in an upcoming movie that hits theatres on October 20. The film also features other big names including Robert De Niro and Leonardo DiCaprio. Here are the details.

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Martin Scorsese's new film, "Killers of the Flower Moon" will officially be released in theatres on October 20, and judging by the trailers, it is one of this year's most highly anticipated films.

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Here's a description of the movie provided by Rotten Tomatoes.

Based on David Grann's broadly lauded best-selling book, "Killers of the Flower Moon" is set in 1920s Oklahoma and depicts the serial murder of members of the oil-wealthy Osage Nation, a string of brutal crimes that came to be known as the Reign of Terror.

The movie was filmed in Oklahoma and features huge stars like Robert De Niro and Leonardo DiCaprio, but an actress from Montana also plays a key role in the film.

What Montana-born actress Stars in "Killers of the Flower Moon"?

"Killers Of The Flower Moon" Photocall - The 76th Annual Cannes Film Festival
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Montana native Lily Gladstone will play Mollie Burkhart, an Osage woman who was married to Ernest Burkhart (Leonardo DiCaprio). Gladstone is a member of the Blackfeet and Nez Perce tribes and was born in Browning, Montana. She also attended the University of Montana.

According to Variety, Gladstone lost 30 pounds while filming the movie.

The second trailer for "Killers of the Flower Moon" was just released, and it looks like it's going to be a movie that you will definitely want to watch. Check out the trailer below.

"Killers of the Flower Moon" will be released in theatres nationwide on October 20.

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