PsyCop - Series by Jordan Castillo Price
Victor Bayne is gay medium whose ability to see and communicate with ghosts makes him invaluable as a homicide cop. It also makes his life more than just a little bit complicated.
Review & Comments
Several of the books in this series are novella length, and there are a few paid and free short-stories available as well. My suggestion: get them all on your Kindle before you start. Because once you wander into Vic;s world you won't want to leave even long enough to download the next story.
Trust me on that one.