Mysteries of Thorn Manor - Margaret Rogerson

In this delightful sequel novella to the New York Times bestselling Sorcery of Thorns, Elisabeth, Nathaniel, and Silas must unravel the magical trap keeping them inside Thorn Manor in time for their Midwinter Ball!
Elisabeth Scrivener is finally settling into her new life with sorcerer Nathaniel Thorn. Now that their demon companion Silas has returned, so has scrutiny from nosy reporters hungry for gossip about the city's most powerful sorcerer and the librarian who stole his heart. But something strange is afoot at Thorn Manor: the estate's wards, which are meant to keep their home safe, are acting up and forcibly trapping the Manor'' occupants inside. Surely it must be a coincidence that this happened just as Nathaniel and Elisabeth started getting closer to one another...

With no access to the outside world, Elisabeth, Nathaniel, and Silas—along with their new maid Mercy—will have to work together to discover the source of the magic...