When Twilight Breaking Dawn Part 2 hits cinemas at the end of the year, it won’t be the end for adaptations of Stephenie Meyer’s books on the big screen, as The Host is gearing up to shoot, with Andrew Niccol directing.

Saoirse Ronan, William Hurt, Max Iron and Jake Abel have already been cast, and they’ve now been joined by Diane Kruger, Boyd Holbrook and Chandler Canterbury, according to Variety.

The film is about parasitic alien creatures called Souls who can take over a human body. Saoirse Ronan stars as a young human soldier who is taken over by a Soul dubbed The Wanderer. While human personalities are normally subdued by their hosts, Ronan’s character puts up a fight, refusing to let go of her identity.

The Wanderer becomes obsessed with the soldier’s memories, and sets out to find her boyfriend and lost brother. Diane Kruger will portray another human with a soul inside called The Seeker, who tracks down The Wanderer. Chandler Canterbury will play Ronan’s younger brother, while Holbrook will be Jake Abel’s macho brother.

The film is due to start shooting at the end of the month, with a release already set for March 2013.