New York Times bestselling author of The Night Huntress series Jeaniene Frost returns with a brand-new series! It’s Beauty and the Beast meets The Witcher in this dark fantastical retelling, except Beauty IS the Beast, and he’s the Warden keeping mythical beings in check in our world and beyond.

Raine Stone was the sole survivor of a horrific creature while camping. Her account of the attack was attributed to shock, but Raine knows all too well that her story is true because now she carries that same Beast inside her!

She’s been restraining its violent urges by letting it "feed" on the pain and chaos she’s exposed to as an ER nurse, and by playing vigilante against would-be muggers at night. But when Raine uses the Beast’s energy to heal a frail elderly gentleman from a seemingly random attack, she opens herself to a new world of danger—literally.

Remington “Remy” Byrne knows that the wall between a realm of deadly mythic creatures and our own world is very thin; he’s the Warden who guards the gateways between them. He also rules the supernatural creatures living in secret among us. Raine’s Beast makes her an intruder on Remy’s territory, but the elderly gentleman she saved is Remy’s grandfather, and her Beast contains power that could tip the scales in a sinister plot against Remy’s rule—if Raine allies with him.

Will they be friends or foes…or will the dangerous attraction between them turn into something else? And can our world be saved by their explosive alliance?