Blister Parkin and the Bullies (4) (Amy and Clown)

(4th in the series)
Amy, Dagmar, Carla, Jack and Blister have been to several indoor jumping events. Between them, they are taking most of the rosettes, with Carla scooping the cups. But they are also collecting enemies. Chief bully and bad loser, William Flint, targets Blister who cannot defend himself. Kelly Flint concentrates on making Dagmar’s life a misery. How can the Flints and their sidekicks be stopped?
How can Blister cope with being bullied at school by Flint and at home by his drunk father?
(Includes 20 photographic illustrations)