By Jeff Labrecque
November 19, 2010 at 02:40 PM EST

Leonardo DiCaprio will produce and star in Legacy of Secrecy, based on the 2008 book by Lamar Waldron and Thom Hartmann that reexamined the assassination of President Kennedy. According to the actor’s publicist, DiCaprio would play Jack Van Laningham, an FBI informant who befriended Carlos Marcello, the southern Mafia kingpin who the book claims confessed to involvement in the 1963 murder of JFK. Warner Bros., which released Oliver Stone’s JFK in 1991, would like to release Legacy of Secrecy in 2013, the 50th anniversary of JFK’s death.