Skateboarding. But how will he keep it secret from his mum, who still has the baby gate up on the top of the stairs to prevent Charlie from falling down and hurting himself? (Ironically, this causes exactly that problem, as Charlie keeps tripping over the gate itself in a state of semi awakeness in the mornings). But when Charlie discovers an even bigger family secret, it looks like everything might be turned upside down, not just Charlie's skateboard moves. Highly recommended.
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