For Sabrina Parry, the world of her small, Welsh mining town is cruel and practical. Her main aims in life are to hold onto her job, hold her tongue, and marry off her pretty, but sickly sister Ceridwen to a man rich enough to look after her.

When Ceridwen vanishes into the woods leaving only an iron ring behind, it's up to Sabrina to find her by venturing into Eu Gwald--fairyland.

Sabrina quickly realizes fairyland is far more dangerous than she ever expected. So when a fae prince who considers himself a scholar of all things human offers her a dangerous deal, Sabrina is forced to accept. The prince is charming, and more interested in Sabrina than she is willing to believe. But as always with fairy bargains, there is a cost.

And if this bargain doesn't cost Sabrina her life, it will certainly cost her heart.