Into the Shadows by Jayda Marx

An ancient evil has resurfaced. For the first time in nearly seven hundred years, ghouls are roaming the earth again. And this time, they’re not alone. Head Elder Abel of the Fairview Vampire Coven has made a pact with the creatures; to join their strengths and take control of the world by fear and force.
Silas and his mate Maddox, along with their friends Thomas and Eleanor, have uncovered this plot and are tasked with finding the ghouls’ whereabouts. They and the allies they’ve gathered from covens across the country must stop this evil in its tracks.
Though their situation is dire, Silas honors the promise of romance he made to his sweet and sassy mate. Maddox introduces him to new experiences, smoking hot encounters, and a love deeper than he ever imagined.