It's a defiant hobby with dangerous consequences, which Kell is now seeing firsthand.After an exchange goes awry, Kell escapes to Grey London and runs into Delilah Bard, a cut-purse with lofty aspirations. She first robs him, then saves him from a deadly enemy, and finally forces Kell to spirit her to another world for a proper adventure.Now perilous magic is afoot, and treachery lurks at every turn. To save all of the worlds, they'll first need to stay alive.

    They've lived there so long, there are only legends about people living anywhere else. Such a life requires rules. Strict rules. There are things that must not be discussed. Like going outside. Never mention you might like going outside.Or you'll get what you wish for.