The Shadow of Excalibur — Joan Upton Hall

After 13 years of relative peace, the Arturo el Rey must confront a past that has come back armed and dangerous. His former lover Gloria forces him to accept her son Edward as his own, and allies herself with a right-wing militia to try and put Edward on the throne. Nilsson is felled by a stroke, and Art's beloved Shanna is attacked en route to her father's compound, her only help the one man that could destroy them both: Stephen Dubois. As the Rey Alliance teeters on the brink of collapse, the doom of Camelot seems to be repeating, and Art must confront the demons of both his own past and the distant one that lies over his head like the sword of Damocles.