Tangled Webs (Black Jewels Series #5)

The invitation is signed "Jaenelle Angelline," and it summons her family to a special soirée. But when her guests enter the house, they find themselves trapped in a living nightmare created by the Black Widow witches—and if they try to use Craft as protection, they risk being sealed in the house forever. But Jaenelle did not send the invitation. And now she and the rest of her family must rescue the others inside—and then find out who has created such a place, and why...