The Keeper of Time: A Wolf Shifter Romance (Moonlight Among Monsters Book 3) - Moonlight Among Monsters, #3

Adi is up to her eyeballs in gods and monsters, but more shadows linger in the world of the paranormal than even she can imagine. One of those shadows is a bright light of beauty that comes beseeching her for her help. A dark shade is searching for the Keeper of Time, an ancient god of legend rumored to be the downfall of Atlantis, and the beautiful goddess pleads with her to find the Keeper before the darkness does. The few clues in their possession lead Eric and Adi from the dingy world of sewer rats to the circles of high-society cool cats.
Their heels are dogged by more than just the shadow of the wolf god that protects them, but by two gods intent on destroying that which they protect, the World Tree. With time against them and them being outnumbered, the pair must rely on their wits and each other to find the Keeper before evil does, even if it means one of them is sacrificed in the process.