Matilda Case isn't like most folk. In fact, she's unique in the world, the crowning achievement of her father's experiments, a girl pieced together from bits. Or so she believes, until Abraham Seventh shows up at her door, stitched with life thread just like her and insisting that enemies are coming to kill them all. Tilly is one of thirteen incredible creations known as the galvanized, stitched together beings immortal and unfathomably strong. For a century, each House has fought for control over the galvanized. Now the Houses are also tangled in a deadly struggle for dominion over death and Tilly and her kind hold the key to unlocking eternity. The secrets that Tilly must fight to protect are hidden within the very seams of her being. And to get the secrets, her enemies are willing to tear her apart piece by piece.