Grave Dagger. Treehawke Saga, #2

Betrayal is a debt best settled on this side of the grave. Dalton and Mallory Smith believe life in Stoney Cove has returned to normal. A year free from paranormal crisis, and their nightmarish memories of Heskora - the Breath Hunter - begin to fade. Until a new threat emerges from a forgotten crypt under the Sunken City: a nameless adversary, empowered by an ancient blood curse and obsessed with vengeance.
A shadowy cabal of corporate power brokers and rogue government agents pursues a parallel agenda, competing - or colluding - with the nameless entity to eliminate their mutual target: Mallory Smith. Nikola Dean is a wild card - cagey, secretive, and dead. To outwit the dark forces arrayed against them, Dalton must decipher what she knows about the Grave Dagger, if only he can gain her trust. Assuming Nikola can be trusted.