The conclusion to The Mercenary and the Mage duology.

Freedom came at a cost they never expected to pay.
After two years as the Prince of Shadow and Ash's slave, Regulus is finally free. But now the sorcerer is in possession of a powerful weapon of destruction and the woman he loves has had her magic ripped from her, and Regulus' guilt threatens to overwhelm him.
Adelaide feels like a part of her soul has been stolen. At least she still has the man she loves and a chance to restore her magic—if they can evade her ruthless suitor. But Nolan Carrick will stop at nothing to see Regulus dead and make Adelaide his wife.
While Nolan hunts them, the Prince prepares to use the Staff of Nightfall against Monparth. Regulus and Adelaide must trust each other if they have any hope of saving Monparth—and themselves.