Six of Crows by Leigh Bardugo

Kaz Brecker is offered wealth beyond his wildest dreams if he can pull off an impossible heist: rescue a prisoner from the Ice Court, a scientist whose work could help his country win a war. He recruits a top notch crew from his criminal gang.: a thief, a sharpshooter, a Heartrender who has some useful magic, and a spy, as well as ex-soldier and a runaway both of whom have inside knowledge of the Ice Court. They might just pull it off too...if they don't kill each other first.

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