Code Name: Mockingbird by Kristen Painter

What does a retired vampire hunter do with the rest of her life?
That’s a question Bess Walker-James is desperately trying to figure out. Having recently been made redundant, she holes up at her family home in Maine to do some serious thinking about what comes next.
Unfortunately, she has no idea.
Until her handsome next-door neighbor shows up. Turns out, Callum McCarthy needs more help than just finding his missing cat. Bess decides to assist him. What else has she got to do? But little does she know he’s a lot more than he seems.
Of course, so is she…