A Detective's Worst Nightmare

This is a Horror novel about a bunch of different kinds of Serial Killers, and ghosts that wind up haunting both the detective and psychic. With some bad corrupted guards working inside a prison. Plus, there's more than one location in this book, but a variety of different places... That the killers go, and there's a few coroners instead of just one. A few of the killers are even Transgender, and there's unfortunately a surprising twist... With a couple of S ance and Spiritual Cleansing's that happen. Also there's a weird ending that surprises the Captain and his detective's, they never saw coming