Director Robert Luketic (21) has finally found his female lead for the thriller Paranoia.  Liam Hemsworth stars as a blue collar guy whose costly and legal mistake at his entry-level job at Wyatt Telecom leads to a deal between him and his ruthless boss.  The CEO promises not to turn Hemsworth’s character in as long as he agrees to infiltrate the competition as a corporate spy.  Things escalate and the young man soon discovers that his boss will stop at nothing to demolish the competition.Variety reports that Amber Heard (The Rum Diary) has been set as the female lead, an intended one night stand who becomes an asset to Hemsworth when he learns that she works at the rival company.  The impressive cast also includes Gary Oldman, Harrison Ford, and Lucas Till.  Production on Paranoia begins next month ahead of a September 2013 release date.  Heard recently landed a role as an assassin in the sequel Machete Kills.