The superpowered, world-beating new novel from multi-award-winning superstar Frank Cottrell Boyce. Rory Gilmartin likes to be prepared for all eventualities. He has devoured and memorized every survival manual going. He could even survive a hippo attack. Just because something is unlikely, that does not mean it won't happen . . . But Rory really wasn't prepared for this. What makes an ordinary boy turn green? Stuck in an isolation ward in a hospital far from home with two other remarkably green boys, there is one unavoidable conclusion. It's not something they've eaten. It's not a disease. There's no green gene. They superheroes - sent to save the world. They just need to get past hospital security and discover what their superpowers are . . .