The Hand of Tharnin — Robert E. Keller

A new evil threatens to bring down legendary Dremlock Kingdom. With two famous Knights struck down, and fear and chaos running wild, Lannon finds himself involved in another bizarre mystery as the forces of the relentless Deep Shadow plot to assassinate the squire and his friends. Can Lannon's Eye of Divinity see the truth of things before the mighty towers of Dremlock Kingdom are turned into rubble?