Criminal prodigy Kaz Brekker is offered a chance at a deadly heist: break into the Ice Court - a military stronghold that has never been breached - and retrieve a hostage whose knowledge could change Grisha magic forever. To succeed would mean riches beyond his wildest dreams - but he can't pull it off alone . . . A convict with a thirst for revenge. A sharpshooter who can't walk away from a wager. A runaway with a privileged past. A spy known as the Wraith. A Heartrender using her magic to survive the slums. A thief with a gift for unlikely escapes. Six dangerous outcasts. One impossible heist. Together they might just be unstoppable - if they don't kill each other first.