Wheels of legend

A new mystery has rolled onto Penfurzy Island, and the Rebel Bicycle Club are ready to investigate! Nessa, Demelza, and their goose, Captain Honkers, are excited to explore a traveling carnival that's come to Penfurzy, and soon they befriend Jack, the son of the carnival owner. But strange things are happening too, like odd tremors that shake the island! Does it have anything to do with the fact that the carnival comes to Penfurzy only every ten...