Heist Society is an enjoyable story with (mostly) memorable characters. Sure, sometimes it gets a little predictable, but whatever, it's still fun. 
 The biggest problem is that the characters are teenagers. That's right, Kat, our heroine, is fifteen, Hale is sixteen, and the others' ages aren't given, but they're all teenagers. This wouldn't be such a big deal, except that this group of ragtag thieves breaks into the most security heavy art museum in the world and get away with it, something that has never been done by any professional adult thieves, save one. Several of them manage to wiggle their way into the museum pretending to be repairmen or tour guides, and no one bats an eye. Hale gets a pass because he's a billionaire rich kid, but the others? Nope, I don't believe that they can suddenly pass for twenty-somethings because they're pretending. 
 This feels like a story that was written with adult characters in mind and then everyone was changed into teenagers because YA reaches a broader audience. It wasn't, of course, but it would have benefited from having the characters be adults instead of teenagers. Still, it's a very fast, very fun read.