Every house has its secrets. Hers happens to have another world inside.

Ursula misses everything about her old life in the city-her friends, her freedom, and especially her dad. Now she's trapped in the crumbling Poisonberry Manor with her pregnant mother, her new stepdad, and a creeping sense that something's not right. When a mysterious black cat leads her to a secret attic, Ursula discovers a portal to another version of the manor-one filled with magic, shadows, and the echoes of her lost father. But the magic soon turns sinister. As the shadows start slipping into her own world, Ursula must uncover the truth behind the haunting-and face the darkness inside her own heart before it's too late.