The Sopranos star James Gandolfini will appear as legendary author Ernest Hemingway in a new movie about the author's stormy romance with World War II correspondent Martha Gellhorn. Robin Wright Penn will play Gellhorn, Hemingway's inspiration for his classic book For Whom The Bell Tolls. Gandolfini will develop and produce the film for US cable network HBO, where the actor has signed a three-year production deal. He is also working on the documentary Occupation Iraq for the network about US soldiers fighting the Iraq war and their homecomings.