The Vampire Lord's Captive: Addicted to Him

An ace hunter agrees to a three-month cohabitation pact with an ancient vampire lord, hoping to find a cure for his sister's wasting blood curse. Neither man expects the lord to have quietly loved him for three years, and the closeness that follows stirs desire and suspicion in equal measure. As the castle grows dangerous, they must unmask a usurper and a traitor while holding back sieges and a rising rebellion.