Eva's life is not her own. She is a creation, an abomination--an echo. She was made by the Weavers as a copy of someone else, expected to replace a girl named Amarra, her other, if she ever died. Eva spends every day studying that girl from far away, learning what Amarra does, what she eats, what it's like to kiss her boyfriend, Ray. So when Amarra is killed in a car crash, Eva should be ready. But sixteen years of studying never prepared...