Some books open one door for you at the beginning to enter and another door for you to leave at the end, but not Exit Party. Mandel guides you carefully through multiple doors, none of them shutting behind you, and when she escorts you out the last one it’s not because the story is over, it’s just because your time with the story is up — for now. If you’re anything like me, you’ll be thinking about it long after you close the book.