James and Jessica, the Two Jays, are on holiday in the West Country in England where they set out to make some exciting discoveries. Have they found the true site of an ancient holy well? Is the water in it dangerous? Why does an angry man with a bicycle tell them to keep away from the deserted stone quarry? A serious accident on the hillside has unexpected consequences, and an old Latin document may contain a secret that's connected to the two strange stone heads in the local village church -- if James and Jessica can solve the puzzle. An adventure awaits!.