When Carl moves into Ben and Olly's street, things instantly get more exciting. His games are strange, unpredictable, and thrillingly violent. But why is he so fearless? Why are they never allowed into his house? And why does it begin to feel as if he is taking control of their lives?

It isn't long before Ben wants his old friendship back, but getting free of Carl turns out to be the toughest challenge he has ever faced.