Wicked Enchantment (TSC crossover)

Will and Jem find themselves in a london they no longer recognize, so they go to the institute only to find they are familar with nobody, and they ask for Tessa Gray, the london institute informs her and her husbad she's been asked for. While the Carstairs and Kit are on the way to London, its plagued with Daytime demon attacks and through a portal comes the cosul and his family, to make matterx worse, Clary and Jace work with Emma and Julian on reforming the clave in Alec's absence, until a familiar evil is encroaching on them.
SPOILER: All Shadowhutner Chronicles Novels, short stories, and extras
All credits including characters and universe go to the amazing Cassandra Clare, thouhg the plot is my own