The Knights of Caerleon Series

Fionna's only hope to save her family lies across the Irish Sea. As a warrior princess of Ulster, the rival clan holding her father and sister for ransom knows she'll pay any price to get them back. But even she couldn't predict the task set before her - to steal a faerie sword from a king. The Kingdom of Caerleon is dying under Morgan le Fay's dark magic. Her vengeful curse has locked Excalibur in its scabbard, placing Arthur Pendragon's kingship in jeopardy. Now Arthur and his sword brothers have one hope. The fifth knight. The one foretold by Merlin who will break the curse.

Irish warrior and fifth knight Fionna Allán agonizes over an impossible choice. Either she saves her father and sister by betraying the three knights and king she loves, or she chooses her heart and dooms her family to death. Determined to find another way, Fionna strikes a bargain with Arthur Pendragon. She'll join his Grail Quest in exchange for his promise to ransom her family. Arthur is convinced that Fionna is a key to finding the legendary Grail. But the Grail will not yield its secrets easily.

Anger and disappointment burn within Fionna Allán following the Grail Quest. Her family still remain captives of a rival clann, and King Arthur Pendragon's kingdom continues to wither and die. Now Fionna's sworn enemy brings war to Arthur's shores with Morgan la Fay at his side - a battle Arthur and Caerleon can ill afford. Especially as one of Arthur's knights has gone rogue, leaving their group weak and devastated. With his kingship in question and his people suffering to the point of rebellion, Arthur and his knights are forced to seek help from the gods.