Brought to you by Puffin.Dexter Procter, the world's youngest-ever doctor, is back for a follow-up medical mystery!All is not well in Dexter's world. His granny has broken her leg, his friends Rupi and Otto have been expelled from school, there's an asthma epidemic he can't get on top of, and slimy politician Barbara Burnhall is trying to shut down everything fun at the hospital. And then his boss Dr Marigold goes missing!What Dexte...