“Thrilling and dangerous, with an ending that will leave you gasping!” —SUZANNE YOUNG, New York Times bestselling author of the series THE PROGRAM In a world where everyone is the same, one girl is the unthinkable: unique. A high-stakes fast-paced series launch from New York Times bestselling author Rachel Vincent. Dahlia 16 sees her face in every crowd. She’s nothing special—just one of five thousand girls created from a single genome to work for the greater good of the city. Meeting Trigger 17 changes everything. He thinks she’s interesting. Beautiful. Unique. Which means he must be flawed. When Dahlia can’t stop thinking about him she realizes she’s flawed, too. But what if Trigger is right? What if Dahlia is different? But if she’s flawed, then so are all her identicals. And any genome found to be flawed will be destroyed, ONE BY ONE BY ONE. . . . “Captivates.” —VOYA “Thrilling.” —School Library Journal “I loved every second of it.” —The Best Books Ever