After months of speculation over the lead role for Quentin Tarantino's upcoming Charles Manson project, Leonardo DiCaprio has been confirmed to star in the film.

DiCaprio Joins The Cast

DiCaprio will play the role of an aging, unemployed actor in the film, and the upcoming film will be his second collaboration with Tarantino.

The actor and Pulp Fiction filmmaker previously joined forces on the 2012 Oscar-winning film, Django Unchained. The upcoming film also marks the 43-year-old actor's first film since Alejandro G. Iñárritu's The Revenant, which won him an Oscar for Best Actor in 2016.

DiCaprio's upcoming roster of films includes a Leonardo Da Vinci biopic, Martin Scorsese's Roosevelt biopic, and The Black Hand, which he is also producing. The film is an adaptation of Stephan Talty's book about the "Italian Sherlock Holmes."

I, Tonya star Margot Robbie is being eyed for the role of Sharon Tate, the actress and model who was stabbed to death by followers of Manson's cult. Tom Cruise, Brad Pitt, and Al Pacino are some of the names that are being considered for the other male lead in the film.

Sony Pictures acquired the rights to the film in November after a heated bidding war with Warner Bros. and Paramount. The studio has set the film's release for Aug. 9, 2019, which marks the 50th anniversary of the cult leader's murder of Sharon Tate and four other victims.

The Plot

In November, Vanity Fair revealed plot details of the upcoming film, citing a source who was familiar with the project. The source shared that the film will be "set in Los Angeles in the summer of 1969" and will revolve around "a male TV actor who's had one hit series and is looking for a way to get into the film business."

The source added that the character also has a sidekick, "who's also his stunt double" and "is looking for the same thing." The insider pointed out that the Manson murders will only serve as a backdrop to the film's main plot.

This is in line with Tarantino's previous clarification that his upcoming ninth feature film does not revolve around Charles Manson and focuses on the year 1969 instead. The director has apparently requested for a production budget in the range of $100 million for the film, which is expected to begin filming in June.

Last month, Tarantino was in the news for pitching an idea for an R-rated Star Trek movie to Paramount with J.J. Abrams on board as producer.