To save a kingdom, she must charm a monster.

Transported to the magical realm of Avalon, Gwen finds herself in the hands of its dark and beautiful ruler-Mordred, the Prince in Iron.

The prince holds total power in Avalon, trapping his rivals in an enchanted crystal prison. But he shows a strange gentleness to Gwen.

Seeing no other way to escape, Gwen strikes a deal with Mordred's enemy. If she can break the crystal, she will be free to go home.

Gwen joins Mordred's court with a plan to steal his heart and destroy his prize.

Desire sparks between them at once. But Mordred is a dangerous host. As they draw closer, his passion and anger burn brighter.

Gwen would be foolish to trust him.

And even more foolish to betray his trust...

A gripping dark fairy tale and a seductive fantasy romance, with slow-burning attraction, enemies-to-lovers banter and an alluring villain. The Iron Crystal series will enchant fans of Sarah J. Maas, Elisa Kova and Danielle L. Jensen.

See why readers love Kathryn Ann Kingsley's tantalizing dark fantasy:

"YES!! YES!! AND YES!! A villainous hero-Check. A spunky sassy heroine-Check. A dark twisted tale that will hold you captive-Double-check." Goodreads reviewer ¿¿¿¿¿

"The romance in this book was absolutely and utterly perfect. Oh my god I'm literally panting on the floor. This is a such perfect enemies to lovers full of angst." Goodreads reviewer ¿¿¿¿¿

"I loved everything about this book!... I honestly couldn't put it down... If you are a fan of dark fantasy romance stories with unapologetic villains and a true enemies-to-lovers romance then you should pick this one up!" Goodreads reviewer ¿¿¿¿¿

"This is a slow burn, but the sexual tension starts out almost immediately and doesn't let up. An instant favorite!" Goodreads reviewer ¿¿¿¿¿

"I'd give this book 10 stars if I could... ACOTAR fans, you'll adore this too. It's spicy, dark, angsty, dramatic... Highly recommend." Goodreads reviewer ¿¿¿¿¿