Promise of the Witch King (Forgotten Realms: The Sellswords, #2)

"Human assassin Artemis Entreri and his dark elf companion Jarlaxle have come to the monster-infested wastelands of the frozen north at the request of their dragon patron. It doesn't take long for them to find themselves caught in the middle of a struggle between powerful forces that would like nothing more than to see them both dead...or worse." But Entreri and Jarlaxle aren't just any wandering sellswords, and the ancient evils and bitter rivalries of the wild Bloodstone Lands may have finally met their match.