What to read after Wither?

For nearly a thousand years, Lucas, an immortal shapeshifter, has waited for Spera, his murdered human lover, to reincarnate. He has no way of knowing when or where she will return, or if she will even look the same in her new life. He must rely on his ability to recognize the actions of her fiery soul and her knack for attracting a killer king's attention.After his search leads him to a quiet Norwegian harbor town, a surreal encounter with his own kind leads to devastating consequences, causing Lucas to question his belief in himself and his quest. With his will and options quickly fading, Lucas is offered help from an old enemy who claims to have knowledge of Spera's return. But it comes at a price: the assassination of the immortal king who took Spera's life.With an army raised and a strategy in place, Lucas is ready to attack, until the sudden appearance of a ghost from his past appears, forcing Lucas to take an even bigger risk than attempting to kill a malicious king?letting him live.