Cross Creek Pictures has optioned the movie rights to Robert Wittman’s 2010 memoir “Priceless: How I Went Undercover to Rescue the World’s Stolen Treasures.” Wittman joined the FBI in 1988 and gained a reputation within the bureau for solving art theft cases, helping to locate paintings by Norman Rockwell, Pablo Picasso, Rembrandt, Camille Pissarro and Claude Monet....