From Erin Hunter, #1 nationally bestselling author of Warriors, comes the New York Times bestselling second book in the Survivors series. Praised by Kirkus Reviews as &;perfectly crafted&; in a starred review, A Hidden Enemy is an action-packed adventure that will thrill fans of Spirit Animals and Wings of Fire.

After discovering a forest filled with prey and fresh water, Lucky and the Leashed Dogs are sure that they have found their new home. But a fierce pack of Wild Dogs has laid claim to the land and their menacing Alpha won&;t allow other dogs to settle there. Now Lucky finds himself forced to go behind enemy lines&;and to decide which dogs will ultimately be his true allies.