An invitation to train at B.A.S.E. Camp, the British Academy of Sporting Excellence, is every young athlete's dream. But what is really going on behind the scenes? Who is the mystery runner that appears out of nowhere? And where does the lake tunnel lead to, with its secret entrance beneath the statue of Olympic champion, Taffy Jones? Are the boys brave enough to find out the answers to these questions, and more? A thrilling sporting adventure from bestselling author Rob Childs.