Leonardo DiCaprio and Martin Scorsese team up for their sixth film together, ‘Killers of the Flower Moon’

Based on David Grann's novel of the same name

Leonardo DiCaprio and director Martin Scorsese will be collaborating on their sixth movie together, with Killers of the Flower Moon.

Based on the non-fiction novel by David Grann, the story chronicles the infamous Osage Nation murders. The Osage Nation people were continuously murdered after oil was discovered on their land. The FBI later launched an investigation into the murders.

While Scorsese will direct and co-produce the film, DiCaprio’s role is yet to be announced. He’ll likely play one of the FBI agents but he could also portray William Hale – the man behind the murders, as identified in Grann’s book.

The movie marks the pairs sixth project together, after working on Gangs of New York (2002), The Aviator (2004), The Departed (2006), Shutter Island (2010) and The Wolf of Wall Street (2013).

Eric Roth, who won an Oscar in 1995 for his work on Forrest Gump, will write the script and production is set to start next summer. That schedule points to a 2020 release for the film.

Meanwhile, DiCaprio is currently working on Quentin Tarantino’s Once Upon A Time In Hollywood. Focusing on the Manson family murders, DiCaprio signed on as “an aging, out-of-work actor” in the movie.

“What he plays, more specifically, is an actor who had his own Western show, Bounty Law, that ran on the air from 1958 to 1963,” reports Deadline. “His attempt to transition to movies didn’t work out and in 1969 — the film is set at the height of hippy Hollywood movement– he’s guesting on other people’s shows while contemplating going to Italy, which has become a hotbed for low-budget Westerns.”

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Other cast members for the movie include Brad Pitt, Margot Robbie, Lena Dunham, Maya Hawk, Dakota Fanning and Damian Lewis. Rising Australian actor Damon Herriman will play Charles Manson.

Producers include Harry Potter’s David Heyman, Tarantino himself, and his frequent collaborator Shannon McIntosh. Georgia Kacandes will also work with Tarantino for the second time, serving as executive producer and line producer.