Roman Polanski has tapped Tilda Swinton for The Ghost. She joins Nicolas Cage and Pierce Brosnan in the adaptation of the Robert Harris political thriller.

According to Variety, Cage will play a ghostwriter hired abruptly to finish the memoirs of an ex-British prime minister after the first scribe turned up dead. The ghostwriter's research leads him to uncover skeletons in the prime minister's closet that put the writer's life in danger.

Swinton will play the wife of the former prime minister (Brosnan). Her marriage is crumbling, and she falls for the writer.

Robert Benmussa and Alain Sarde are producing. Polanski and Harris teamed to write the script.

Production begins in September in Europe.