Join Rebecca and her friends at Trebizon, perfect for fans of Enid Blyton’s Malory Towers and St Clare’s. There’s a new maths teacher at school but he seems to be ignoring Rebecca. She needs to improve her grade, otherwise she might be split up from her best friends next year. And everything is so busy as summer sports start up and the girls are taking part in a sponsored surf for charity week. When the money raised for charity week mysteriously goes missing, Rebecca and her friends go on the trail of the thief. Will all this excitement get in the way of Rebecca’s studies?