This is the third book in the pony cubes collection. The break-in. Summer has a nightmare and wakes up at 4am, covered in sweat. She can't get the nightmare out of her head and decides to wake her mum up and get her to call Tracy - the owner of the riding school. Summer feels sure that something awful has happened to the horses.. A heart warming story, any horse mad girl will love. Other books in the pony cubes collection, Summer and Polo. Ruby's story. The break-in. The horse riding party. What will be, will be