We’ve come a long way from Beverly Cleary, and even Judy Blume, in YA fiction. Written by Ewell when she was seventeen, this book describes the life and thoughts of a teenage serial killer. Kit, who recalls making her first kill (with her mother’s assistance) when she was nine, is the “Perfect Killer” in contemporary London. She performs anonymous hits on individuals who have been singled out by their friends (or enemies, as it turns out). She leaves no clues. . . until she makes a mistake. This is a good thriller, very creepy—especially the relationship between the teenager and the young police officer—that held my attention. Indeed, I don’t recommend reading at bedtime, as you will spend the rest of the night with it to see what happens.