Hannah Montana goes Undercover in new comedy… Miley Cyrus has signed on to star as a private investigator in action-comedy So Undercover. The Hannah Montana star has been cast as a young woman who is hired by the FBI to go undercover at a college sorority. Tom Vaughan will helm the movie based on a script by Wall Street: Money Never Sleeps writer Allan Loeb and Steven Pearl. Guy East and Nigel Sinclair’s Exclusive Media Group are on board to produce and finance. Cyrus will next be seen in LOL opposite Demi Moore and Ashley Greene.