Monster of Shiversands Cove, the

Stan is on holiday with his family at the seaside when everything starts going a bit odd. First there's the fairy - the one his brother caught. It doesn't look like a fairy. It's not twinkly. Its name is Harry, and it bites. Then there's the sea monster. The huge one in the bay that's after Stan's little brother. The one that only Stan can see. Can Stan find out what's going on, stop the monster, save his brother - and watch out for Harry?