I Am Number Four: The Lost Files: Secret HistoriesBy: Pittacus Lore Series: Lorien Legacies: The Lost Files The perfect companion book to the New York Times bestselling I Am Number Four series! I Am Number Four: The Lost Files: Secret Histories is the second collection of action packed novellas from Pittacus Lore. Initially published separately as digital originals, these three stories are now together in one print volume. Lost Files: #4: The Search for Sam follows the rogue Mogadorian Adam on his