A Fury's Heart

Wade never expected to come home and find a demon in his bed.
Along with most of the world, the wolf shifter hated demons, so when he saw her, his first instinct was to attack. But this demoness came with a grave warning. Something much worse was coming.
Instead of killing the intruder, he's forced to work with her, as well as a small group of demon hunters. They only have until the next full moon to find a way of preventing the demon lord of another dimension from coming to Earth and claiming it as his own. And it won't be easy.
Not only do they need to discover exactly when and where the demon lord will arrive, they're also being tracked. Every time they turn around, they have to deal with yet another attack. They're good, but it will only take one wrong move to end them and doom the world.