Mark of the Demon by Diana Rowland is 99c (Kara Gillian series book 1) discount available in US and europe so may be worldwide
https://store.kobobooks.com/en-us/eb...k-of-the-demon
https://www.amazon.com/Mark-Demon-Ka.../dp/B002DNZG1K
On the edge of the Louisiana bayou, Officer Kara Gillian finds evidence that the Symbol Man--a serial killer with the ability to inhabit multiple bodies--is back. Her determination to crack the case is tempered only by her special understanding as a demon summoner. Is she the lead investigator, or the reason the killer is stalking her parish?
This is urban fantasy/paranormal mystery/police procedural and also includes a few sex scenes although romance is not the focus of the book