The Griffin's War (The Fallen Moon, Book 3)

After promising his allegiance to the Night God, Arenadd Taranisaii escapes death for the second time and vows to free his people. With the dark griffin Skandar by his side, Arenadd begins to gather an army and prepare for war using the power gifted to him by the Night God to move through the shadows. But even as Arenadd's strength grows his nemesis sets out for the Island of the Sun, seeking the one weapon that can truly kill Arenadd, the man without a heart.