Avalon’s Call by Lynne W. Bailey
Avalon isn’t the same place Arthur remembers. The place he left was magic, but the Avalon he returns to is dark, very dark. Danger lurks around every corner, Guin is missing, and Avalon’s magic is fading fast.
With the help of his friends, Arthur has to overcome new obstacles, fight new enemies, battle his way out of treacherous situations, and come face to face with the ancient evil they released during his last visit.
Arthur is scared but he’s determined to find Guin and save Avalon.