Synopsis via Goodreads:
From the author of Entwined, a brilliantly conceived adventure through an alternate London. This sweeping, cinematic tale of an apprentice scientist desperate to save his family—and his world—is The Night Circus meets Pixar.
Through richly developed parallel worlds, vivid action, a healthy dose of humor, and gorgeous writing, Heather Dixon spins a story that is breathtaking and wholly original.
“. . . is The Night Circus meets Pixar.”
(Also, does anyone else think that the guy on the cover is trying to cop a feel with his right hand? Because really.)