Nikolaj Coster-Waldau, Morgan Freeman joining Tom Cruise in 'Oblivion'

The cast of Tom Cruise's sci-fi thriller "Oblivion" continues to grow with the news that "Game of Thrones" star Nikolaj Coster-Waldau is joining the project.

Nikolaj Coster-Waldau

Directed by Joseph Kosinski ("TRON: Legacy") and based on his graphic novel, the film will be set in a future in which most people live in the sky with the surface unlivable and crawling with deadly aliens. A repairman on the surface (Cruise) discovers a crash-landed pod containing a woman, changing his life forever.

According to Deadline, Coster-Waldau, who is portraying Jamie Lannister in "Game of Thrones," will play Sykes, a military and weapons expert.

Coster-Waldau's involvement comes on the heels of the news, also broken by Deadline, that Morgan Freeman ("Wanted') has joined the cast as well. His role is not known at this time.

William Monahan ("The Departed," "Kingdom of Heaven") wrote the screenplay. The film is set for a July 19, 2013, release with production expected to begin this fall.

'The Departed' scribe William Monahan to visit 'Sin City'

Six years after directors Robert Rodriguez and Frank Miller wowed audiences with "Sin City," the pair have signed Academy Award-winning screenwriter William Monahan to work on the script for the sequel.

William Monahan

Monahan won the 2006 Oscar for Best Adapted Screenplay for Martin Scorsese's "The Departed." His other credits include "Kingdom of Heaven," "Body of Lies" and "Edge of Darkness."

The Hollywood Reporter's Heat Vision first reported Monahan's signing adding that he will be "supplementing" a draft written by Miller, who created the original "Sin City" graphic novels.

Rodriguez said at Comic Con last month that financing was arranged and filming would begin as soon as the script was ready.

Fans, myself included, have been waiting for word on when the promised sequel would finally come. It seems the wait may soon be over.