The forces of evil are growing stronger - but could our heroes' worst enemy be phoney bone himself? Fone bone confronts a host of dangers in book 4 of the bone saga, the dragonslayer. He and gran'ma ben and thorn have a ...The forces of evil are growing stronger - but could our heroes' worst enemy be phoney bone himself? Fone bone confronts a host of dangers in book 4 of the bone saga, the dragonslayer. He and gran'ma ben and thorn have a terrifying encounter with kingdok, ruler of the rat creatures.