Blades of the Old Empire. Assassins' Code, #1

Book 1 in the award winning fantasy series. When Prince Kythar falls under attack in his own castle, he has no idea that his enemies are none other than the ancient Kaddim Brotherhood. Kyth's inborn ability to control the elements is the only power that can stop the plot to destroy his royal line. But there is one problem: Kyth's fighting skills are no match for the Kaddim. To defeat the Kaddim, Kyth must rely on his bodyguard Kara, a beautiful Diamond-ranked assassin from the elite Majat Guild.
But Kyth's enemies are smarter than he gives them credit for-and they develop an elaborate plan to remove Kara as an obstacle. Acting through treachery and scheming, they pitch Kara against the Majat, marking her as a target for the only warrior who can defeat her in battle. With the deadly assassin on their trail, Kythar and Kara must face impossible odds to save the kingdom and their lives.