From New York Times and USA Today bestselling author Jamie Thornton comes a stunning survival series that has readers raving about its dark and gritty thrills. Powerful enemies, twisted memories, a government willing to do anything for control. Find out how it all began… ONCE UPON A TIME A PLAGUE ENDED THE WORLD. Mary knows how to thrive on the street. She makes it her mission to keep other kids away from everyday monsters. But when she’s attacked by a crazed man clutching a bloody heart she realizes—there’s a new kind of monster in town. A single drop of blood, and now Mary’s one of the infected. Unless she can stop the virus and save her friends, the new monster in town might just be her.