Casey's sister, Sutton, has gone missing. And while she’s trying to help find her, Casey is furious. Sutton seems perfect: the popular cheerleader with an entourage of friends, a doting boyfriend, and a limitless future. But Sutton manipulated everyone around her. People don’t look for missing Black (or half-Black) girls without believing there is an angel to be saved. Then Sutton reappears...though she isn’t the same. She remembers nothing about while she was gone—or anything from her old life, including how she made Casey miserable. There’s something unsettling about the way she wants to spend time with Casey, the way she watches her goldfish swim for hours. And the more Casey starts uncovering her sister’s secrets, the more questions she has...