SOLVED. Fiction about demon healer [s]

[Laureen]

I wanted to see if this book had a sequal but I can't remember the name.

This is a book about a man who kills demons because of the death of his wife. He ends up capturing a demon who happens to be a healer (unbeknowns to him) at a secret demon gateway.

He is trying to get her to tell him the location of the gateways and how to find them. He is bitter, angry and mean. But she's actually very kindhearted and naive.

[Kate]

Laureen, you can bump your thread back to the top of the folder every month or so. This gives new eyes and new ideas to gather.

[Ayshe]

Blood and Sin by Laura Thalassa and Dan Rix?

[Laureen]

Yes, that's it! Thank you! I have looked around and it seemed they never continued with the series.