Circus of the Damned by Laurell K. Hamilton (Anita Blake, Vampire Hunter #3) is currently on sale for $2.99 in the US.
As previously discussed here the early Anita Blake novels focused more on the mystery solving, zombie raising, vampire and other supernatural politics whereas the later books focus mainly on Anita's sex life, although the early books also included her relationships.
I really enjoyed the early books and recommend them, just be aware that they change later in the series and this may or may not be to everyone's taste
https://www.amazon.com/Circus-Damned.../dp/B000OCXIMQ
https://www.kobo.com/us/en/ebook/circus-of-the-damned-1
I'm Anita Blake, expert on creatures of the night. I've dined with shapeshifters, danced with werewolves, and been wooed - but not won - by Jean-Claude, the Master Vampire of the City. And now a darkly dangerous vampire named Alejandro has hit town. He too wants me for his human servant. A war of the undead has begun. Over me. I would be flattered. If my life weren't at stake.