Shadowheart (Shadowmarch Series #4)

Thousands of years ago the gods fought and fell in the deeps beneath what is now Southmarch Castle, then were banished into eternal sleep. Now at least one of them is stirring again, dreaming of vengeance against humankind.
Southmarch haunts the dreams of men as well as gods. Royal twins Barrick and Briony Eddon, the heirs of Southmarch’s ruling family, are hurrying back home as well: Barrick now carries the heritage of the immortal Qar inside him, and Briony has a small army at her back a…