An undercover mission leads to danger, adventure and an impossible choice. After siphoning her own blood magic in the showdown at Hubal, Opal Cowan has lost her powers. She can no longer create glass magic. More, she's immune to the effects of magic. Opal is now an outsider looking in, spying through the glass on those with the powers she once had, powers that make a difference in the world. Until spying through the glass becomes her new power. Suddenly, the beautiful pieces she makes flash in the presence of magic. And then she discovers that someone has stolen some of her blood — and that finding it might let her regain her powers. Or know it could be they are lost forever.
Student glass magician Opal Cowan's newfound ability to steal a magician's powers makes her too powerful. Ordered to house arrest by the Council, Opal dares defy them, traveling to the Moon Clan's lands in search of Ulrick, the man she thinks she loves. Thinks because she is sure another man now her prisoner has switched souls with Ulrick.
In hostile territory, without proof or allies, Opal isn't sure whom to trust. She can't forget Kade, the handsome Stormdancer who doesn't want to let her get close. And now everyone is after Opal's special powers for their own deadly gain....
Untrained. Untested. Unleashed. With her unique magical abilities, Opal has always felt unsure of her place at Sitia's magic academy. But when the Stormdancer clan needs help, Opal's knowledge makes her the perfect choice — until the mission goes awry. Pulling her powers in unfamiliar directions, Opal finds herself tapping into a new kind of magic as stunningly potent as it is frightening. Now Opal must deal with plotters out to destroy the Stormdancer clan, as well as a traitor in their midst. With danger and deception rising around her, will Opal's untested abilities destroy her — or save them all?