"Tessa could not remember a time when she had not owned the clockwork angel. It had belonged to her mother once, and her mother had been wearing it when she’d died. After that it had sat in her mother’s jewelry box until her brother Nathaniel took it out one day to see if it was still in working order. The angel was no bigger than Tessa’s pinky finger, a tiny statuette made of brass, with folded bronze wings no larger than a cricket’s, a delicate metal face with shut crescent eyelids, and hands crossed over a sword in front. A thin chain that looped beneath the wings allowed it to be worn around the neck like a locket…"