In fact, he loathes Auberon. Auberon was the son of his archenemy, Merlin, but used magic to convince people he was the true heir to the Fey throne. In reality, Nia is Mordred’s heir in the House of Morgan, condemned to destroy Avalon Tower. This means her lover Raphael has her on his kill list, but he just doesn’t know it yet. She is not, in fact, Prince Talan’s sister. Mordred offers to help her find Raphael in Auberon’s torture dungeons—if only she will help him destroy Avalon Tower once and for all—just as the prophecy has predicted.