A collection of ten short stories, some of which were previously available online, that follow Jem Carstairs as he travels through the many Shadow Markets around the world, searching for a relic from his past. Follow Jem and see--against the backdrop of the Shadow Market's dark dealings and festival--Anna Lightwood's doomed romance, Matthew Fairchild's great sin, and Tessa Gray as she is plunged into a world war. Valentine Morgenstern buys a soul at the Market and a young Jace Wayland's soul finds safe harbor. In the Market is hidden a lost heir and a beloved ghost, and no one can be saved one they've traded away their heart. Not even Brother Zachariah.