What book is this I saw advertised earlier?

[QuebecBagnet]

Can’t remember the name or author but it popped up on Facebook and no amount of fb scrolling, googling or Amazon searching is helping.

said it was the 20th book in a series. Male author. Crime book and I’m fairly sure it said it was paranormal crime/supernatural crime. Don’t think it was vampires.

Was it part of the Rivers of London series by Ben Aaronovitch? Paranormal crime stories set in / around London?

I'm not sure if he's on his 20th but he's certainly written a lot!

Thats only on book 9

The Furies by John Connolly. 20th book in the Charlie Parker series - I love them!

That’s the one, thank you. Back to Amazon to buy the first one.

Oh even better, Amazon says I bought the first one 4 years ago. Never read it!

Jim Butcher's Dresden files?

Was going to suggest that it might be the Steve Higgs Blue Moon Investigations books, but see you have already discovered what it is

So do I :) I just finished #8.