Beg Me to Slay by Lisa Kessler
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Demons can be fun to read about - especially when they are unique. Lisa Kessler has some very unique demons in her world (I really liked Lago) that the demon slayer, Gabe, has to deal with. When the very cute Tegan shows up asking for his help, he knows that he won't be able to turn her down. But when he starts to fall for her, he's afraid that history will repeat itself and she'll end up getting hurt because of him. Tegan, on the other hand, is bound and determined to make the most of her life (finally) - and that includes killing the demon that attacked her and finding what might be between her and Gabe.
I loved the fact that they were both totally kick ass - but at the same time needed to have each other's back to defeat the demons. The demons were varied in the attacks and vulnerabilities, and some were even informants for the good guys. It was fantastic. Kessler introduced a lot of Welsh lore and I would have liked to see a little more of the history than the little stippets we got.