Book excerpt: Wasim wants to be a One Star swimmer. But when the day comes to take the plunge, Wasim's up to his neck in trouble before even dipping a toe in the pool. Swimming instructor Carol orders him out of the pool area for talking, and he was only trying to help the new boy, Wayne. Now Wasim will have to wait a whole term before he can try for his One Star again. Upset, Wasim watches from the sidelines but he finds himself in the right place at the right time when terrible danger looms for one of his classmates…