Sandy is too small to join an exciting adventure with her friends, but that’s okay, because she’ll form her own club! Join her, Thomas and all the Sodor gang as they search for the mysterious crystal cave, in this latest All Engines Go picture book.

Thomas has been teaching children lessons about life and friendship for over 75 years. He ranks alongside other beloved characters such as Paddington Bear, Winnie-the-Pooh and Peter Rabbit as an essential part of our literary heritage.