Zero Hour, the fifth paperback 'bind up' which will consist of Legacies Reborn, Last Defense, and Hunt for the Garde, will be released on 31st May 2016 The perfect companion book to the #1 New York Times bestselling I Am Number Four series! I Am Number Four: The Lost Files: Zero Hour is the fifth collection of novellas from Pittacus Lore. Originally published separately, they are now together in one print volume for the first time ever.