The Lure of Wolves and Whispers by Amanda Connolly

MAGIC COMES WITH A TERRIBLE PRICE. ARE YOU WILLING TO PAY?

Years after the High King banned magic, whispers persist that a mage remembered only as the Martyr lies in hiding, waiting to lead the people into their powers once more.

For Maeve, the stories are just that, stories. But when her sister is gravely injured, she risks impalement on the dreaded Black Dock for a chance to buy the forbidden magic that could save her sister's life and trade her own to a ruthless and dangerously alluring rebel leader.

Bound to do the rebel leader's bidding, Maeve begins to suspect he knows more than he lets on. But as she probes deeper, a dark past emerges tying him to a prince who could be even more brutal than his father - and who could hold the key to whether they will live or die. With the Isle on the brink of war, trust and survival come at a terrible cost - one that will tear her world, and her heart, in two.