The Obsidian Tower - EN - Melissa Caruso - Paperback

Rooks and Ruin, book 1 of 3, completed series

Keep your secret, guard your lore: nothing must unseal the door.

Deep within Gloamingard Castle lies a black tower. Sealed by ancient magic, it guards a dangerous secret that has been contained for thousands of years. 

As Warden, Ryxander knows the warning passed down through generations: 'nothing must unseal the door'. But one impetuous decision will leave her with blood on her hands, and unleash a threat that could doom the world to fall to darkness.