I knew she wrote cat mysteries but I had no idea what kind of cat mysteries they were, I just assumed they were bog-standard cozies and so never looked into them!

I believe his chapters alternate with the third-person perspective of his human whose life is observed in a totally normal mid-'90's mystery style, but Midnight Louie himself sounds like he just coughed up a hairball composed of equal parts Raymond Chandler and Damon Runyon and I can't remember a thing about any of the plots, but the pulp-narrating cat definitely stuck with me.