Finvarra's Circus is coming to town, and Leanna Weston is determined to see it. Everyone knows once the circus leaves, the fairest girl in town is found dead, deformed, and heartless. Rumors say it's the handsome ringmaster, Finvarra, who steals their beauty and their hearts, but this means little to Leanna. Her heart is damaged and failing her. Surely he won't want it. She sneaks into the circus, but caught by Finvarra, he gives her a choice: become their tightrope walker or die.

Leanna accepts, and now a part of their strange family, she learns that Finvarra never meant to harm her. He needs her to stay. An ancient curse binds the troupe to their circus. They must perform forever or perish. To break the curse,Finvarra must die, and only the famed muse, the Leanan Sidhe, can kill him.

Finvarra believes he's found his muse in Leanna, and Leanna can't deny the growing attraction between them. But not everyone wants freedom for the circus and they'll kill any girl suspected of being Finvarra's inspiration.

With her life and the circus's on the line, can Leanna sacrifice her love to free the troupe? Will her feelings for Finvarra be their demise? Or will her heart fail her when she needs it the most?