Vow of Thieves by Mary E. Pearson

The thrilling sequel to Mary E. Pearson's YA novel, Dance of Thieves.

Kazi and Jase have survived, stronger and more in love than ever. Their new life now lies before them—the Ballengers will be outlaws no longer, Tor's Watch will be a kingdom, and the two of them will meet all challenges side by side, together at last.

But an ominous warning mars their journey back, and in their rush to return to Tor's Watch, just outside the fortress walls, they are violently attacked and torn apart—and each is thrust into their own new hell.

Unsure whether the other is alive or dead, Kazi and Jase must keep their wits among their greatest enemies and unlikeliest allies. And all the while, Death watches and waits.