The Night Circus
by Erin Morgenstern
This is that very rare bird, a Readercon recommendation that became a best-seller. This terrific first novel seems to me to be, in essence, a response to the Punchdrunk production of Sleep No More: how magical would immersive theater be if you had access to real magic? Readable yet adventurously written, the book has a complex timeline, a sub-thread in second person present, two sets of twins, and (of course) a wonderful traveling circus.