"Brutally beautiful — not like anything else you'll read this year, or any other." - Cassandra Clare, #1 New York Times bestselling author of Clockwork Angel

Kit and Fancy Cordelle are sisters of the best kind: best friends, best confidantes, and best accomplices. The daughters of the infamous Bonesaw Killer, Kit and Fancy are used to feeling like outsiders, and that’s just the way they like it. But in Portero, where the weird and wild run rampant, the Cordelle sisters are hardly the oddest or most dangerous creatures around.

It’s no surprise when Kit and Fancy start to give in to their deepest desire—the desire to kill. What starts as a fascination with slicing open and stitching up quickly spirals into a gratifying murder spree. Of course, the sisters aren’t killing just anyone, only the people who truly deserve it. But the girls have learned from the mistakes of their father, and know that a shred of evidence could get them caught. So when Fancy stumbles upon a mysterious and invisible doorway to another world, she opens a door to endless possibilities….