Elisabeth Scrivener is finally settling into her new life with the sorcerer Nathaniel Thorn. Now that their demon companion Silas has returned, so has scrutiny from reporters curious about the city's most powerful sorcerer and the librarian who won his heart. But something is wrong at Thorn Manor: the estate's protective wards have begun acting up, forcibly trapping its occupants inside. With no way to reach the outside world, Elisabeth, Nathaniel, Silas, and their new maid Mercy must work together to find the source of the malfunctioning magic before the manor is due to host the city's Midwinter Ball. When it becomes clear that the house, shaped by the will of Nathaniel's ancestors, demands a price for its cooperation, Elisabeth and Nathaniel are forced to lean on their bond more than ever. A companion novella to Sorcery of Thorns, set a few months after that book's epilogue.