Ten-year-old Della has always had her older sister, Suki: When their mom went to prison, Della had Suki. When their mom's boyfriend took them in, Della had Suki. When that same boyfriend did something so awful they had to run fast, Della had Suki. Suki is Della's own wolf - her protector. But who has been protecting Suki? Della might get told off for swearing at school, but she has always known how to keep quiet where it counts. Then Suki tries to kill herself, and Della's world turns so far upside down, it feels like it's shaking her by the ankles. Maybe she's been quiet about the wrong things. Maybe it's time to be loud.