Black Heart by Holly Black - 9781399628709

Available on back-order.

Cassel knows he's being used as an assassin, but he's trying to convince himself that working for the Feds is the right choice, even though he's been raised to believe the government is the enemy of all curse workers.

With a mother on the run, the girl he loves about to take her place as mob royalty, and new secrets coming to light, the line between what's right and what's wrong becomes increasingly blurred.

When the Feds ask him to do the one thing he said he would never do again, he starts to wonder if there are any good guys, or if it's all a con. And if it is, Cassel will have to decide if love is worth betting everything on, including his life.