Secrets When in Shadow Lie — Jennifer St. Clair

Twelve years ago, Ryan Grey was cursed by a witch to hide a secret. He's lived with the curse of being unable to die permanently, and, over the years he's slowly losing the memory of his past until almost nothing remains.

But now, after a chance meeting with an elf named Zipporah, he discovers the key to unlocking the secret and breaking the curse once and for all...if he can survive the breaking.