"Jack's life is pretty good -- he has great friends, everyone loves his funny jokes and he's an awesome inventor. But things are getting complicated. Nanna's older and wobblier, and why does his face turn red when he sees his best friend, Anna? And to top it off, Mum and Rob's wedding seems to be taking over the world. Something really scary has also happened to his mum and it's going to take all of Jack's courage to deal with it"--Page 4 of cover....