Why did J.D. Salinger stop publishing? Does he have manuscripts hidden away in a vault? Do Edward Norton, John Cusack, Martin Sheen, and Danny DeVito like Catcher in the Rye as much as you? Why does a documentary about an author look like an edge-of-your-seat Da Vinci Code knock-off? Get ready for these questions and more to be raised and occasionally answered in the trailer for Salinger.