From Stephenie Meyer, creator of the Twilight Saga, comes a riveting novel about love and survival. Earth has been invaded by a species of parasitic aliens called 'Souls,' who take over human bodies and erase their minds. When Wanderer, a Soul, is implanted into the captured Melanie Stryder, she finds that her host's consciousness refuses to surrender. Melanie's memories and intense emotions overwhelm Wanderer, creating an unwilling alliance. Together, they embark on a perilous journey to find the last pocket of human resistance and the people they both have come to love.