'This is a truly excellent fantasy and an epic beginning for a new trilogy' Locus

One woman will either save an entire continent or completely destroy it in a captivating epic fantasy bursting with intrigue and mystery, broken magic and betrayal.

'Guard the tower, ward the stone. Find your answers writ in bone. Keep your trust through wits or war - nothing must unseal the door.'

Deep within Gloamingard Castle lies a black tower. Sealed by 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 unreal the Door. But one impetuous decision will leave her with blood on her hands - and unleash a threat that could doom the world to darkness.

'A classic, breath-taking adventure brim-full of dangerous magic and clever politics. This is a book that will thrill and delight any fantasy fan' Tasha Suri, author of The Jasmine Throne

'A must-read for lovers of high fantasy' C. L. Polk, World Fantasy Award-winning author Witchmark

'With this novel, Melissa Caruso solidifies herself as one of my favourite authors. The Obsidian Tower is a masterpiece of character driven fantasy . . . I was enthralled from the first page' Fantasy Book Review