“Part wish-fulfillment romantic comedy, part edge-of-your-seat end-of-the-world action thriller: it’s as if Nora Ephron wrote The Bourne Identity, but even she probably wouldn’t have handled this mix of genres with the dexterity of Horowitz. In fact, her storytelling —twisty, sexy, smart — is so skillful; it’s hard to believe this is her debut novel.”