Covenant in Blood — Ariel Tachna

Book Two in a Four Book Series. The wizards and the vampires have forged an alliance based on blood and magic, hoping to turn the tide of the war against the dark wizards. A few wizard-vampire bonds are as successful as Alain Magnier's and Orlando St. Clair's, but some are much less so, leading to arguments, resentment, and outright fights between the allies despite their mutual goals. Following his best friend Alain's example, Thierry Dumont determinedly forms a partnership with vampire Sebastien Noyer, despite the wizard's discomfort with being so close to a vampire â€" a man â€" so soon after his wife's death. But they find that desperation may be the key to forming a covenant that works: Thierry and Sebastien are almost immediately devoted to one another's safety. With new strength behind it, the Alliance's leaders move to announce its existence to the whole world, hoping to rally support against the dark wizards who threaten to destroy life as they know it. Struggling to find its way in the expanding war, the Alliance discovers that despite its advantages, the partnerships are affecting the balance of magical power in the world, which may be an even bigger threat than the war itself.