"She spent her life fearing monsters. Now, she is becoming one." In a world divided between sidra, mutants who retain their humanity; and wengka, mindless creatures feared as monsters, Audrey Sinatra knows exactly which side she wants to be on. Until a wengka attack leaves her on the brink of death. An experimental treatment saves Audrey's life, but it also awakens something monstrous inside her. Now, with a strange power called "Decay" coursing through her blood, Audrey must learn to control instincts she never knew she possessed. And after a tragedy she can never take back, she is taken to Bhavana City, a sanctuary where mutant humans are supposed to be safe. But someone is watching her. A ruthless scientist named Agni believes Audrey's blood holds the key to an extraordinary power, and he will stop at nothing to claim it. Hunted from within and without, Audrey must uncover the truth about her transformation before she loses herself completely, because becoming human again may be impossible. "And the monster inside her is only beginning to wake."