Entreat Me — Grace Draven

Afflicted by a centuries-old curse, a warlord slowly surrenders his humanity and descends toward madness. Ballard of Ketach Tor holds no hope of escaping his fate until his son returns home one day, accompanied by a woman of incomparable beauty. His family believes her arrival may herald Ballard's salvation. ...until they confront her elder sister. Determined to rescue her sibling from ruin, Louvaen Duenda pursues her to a decrepit castle and discovers a household imprisoned in time. Dark magic, threatening sorcerers, and a malevolent climbing rose with a thirst for blood won't deter her, but a proud man disfigured by an undying hatred might. Louvaen must decide if loving him will ultimately save him or destroy him. A tale of vengeance and devotion.