Used book – The Thea Sisters and the Treasure Seekers, Thea Stilton

To keep themselves busy during the holidays, Nicky and her friends Craig and Elly had a great idea: to organize a big sports championship. Hundreds of spectators from all over Whale Island came to watch the diving, fencing, canoeing, and rhythmic gymnastics events! In the stands as well as on the field, everyone is wondering: who is the mysterious athlete hiding under a fencing mask? Why did Nicky the sportswoman suddenly lose all her composure? And who between Colette and Vanilla will win the gymnastics medal?

Ages 8 and up