MacHale (Pendragon series) shifts into thriller mode as he launches a trilogy with a creepy tale of teens forced into a dire situation. Tucker Pierce, a high school freshman, lives on idyllic Pemberwick Island off the coast of Maine. After a series of mysterious deaths, everything he knows is thrown into turmoil. Captain Granger, the commander of SYLO, a secret agency, informs the residents that the island has been hit by a lethal virus and must be quarantined. Tucker and his friends believe there’s more to SYLO’s story and they are determined to escape to the mainland. But once there, they find more questions than answers.