Beyonce Knowles is set to return to the big screen as one of the stars of a new stalker thriller. The pop superstar, who won acclaim for roles in Dreamgirls and Austin Powers In Goldmember, will play the wife of a successful businessman, who becomes the target of a stalker - played by Heroes stunner Ali Larter - in Obsessed. American Gangster star Idris Elba will play Knowles' husband in the film, which will start shooting this summer (08). The singer will executive produce the thriller along with her father/manager Mathew Knowles, according to Daily Variety. Knowles is also producing and co-starring as Etta James in upcoming biopic Cadillac Records.