From a New York Times bestselling author, a woman teams up with a NASA astronaut to avenge her twin sister's brutal murder–before the killer strikes again. Identical twins Melina and Gillian Lloyd switch places for the first time since childhood when Melina proposes that Gillian take her place as a media escort to NASA astronaut Col. "Chief" Hart. The following morning Melina receives terrible news: her sister has been murdered–and Chief, though innocent, is the prime suspect. Now, with targets on their backs, they must work together to learn the truth behind Gillian's death–before they become the killer's next victims.