Excalibur Rising: Book Three — Eileen Enwright Hodgetts

Ryan brings Excalibur back to his own world for safekeeping and leaves Violet behind in Albion.When he steps through the portal in England he finds enemies on all sides. Pursued by Michael Mandretti's mob friends and Bors the one eyed man, he must rely on a goodhearted London car thief and his dog to help him save King Arthur's world. Aided by Gwyneth, a magical folk singer, Violet's brother Todd, and Kevin who knows the secrets of crop circles, Ryan must risk his life to uncover the mystery behind the building of Stonehenge and the ancient monuments of England, before he can find a way to return to Violet. But something unforeseen sleeps beneath the surface and when it awakes all history will be changed forever.