Where Are the Kings by Donal Ryan

Something terrible has happened to Jack but no one seems to want to talk about it. His uncles can tell him about everything from quantum physics to how to hunt for deer, but they can't seem to tell him anything about their own sister or why Jack doesn't feel sad for her in the way he should, or why Grandad tries to shoot Jack's dad when he gets out of the hospital. Still, there's work to be done in the oily wonderland of his uncles' garage; there's his beautiful aunt Rose to hypnotise him and his loving grandparents to console him; then there's JJ, who wants to fight him one day and save him the next. But with so many questions, in a family with so many secrets, it is difficult for Jack to understand the person he is becoming. How can a simple boy learn to become a king?