|Since you wanted a review, here is the best that i can offer, bearing in mind that I am not a fiction writer.
on this line: "He, she is still out there. Don't ask me how I know, I just feel it in my gut."
Maybe writing "They are still out there..." would have been more appropriate, since it was already determined that there was more than one person. Plus, it sounds more like something one would say.
The other thing that REALLY bothered me was this:
"Be thankful they're both there for you," Grabowski said, without thinking. Mulroy glanced up at him questioningly, and he had to turn back to looking at the files or risk his friend seeing the embarrassment there. He hadn't meant to say it aloud, but he had anyway. At least the detective had a family to return to, somebody who would notice if he was missing.
The reason being that this led me to believe the the main character was alone in life, alot like the victim. So, when the wife entered the scene, it stopped flowing for me.
One last thing, and I will stop. This sentence didn't really flow for me: The detective had offered to get him dried off somewhere but he'd refused.
Something along the lines of: The detective had offered a place for Grabowski to dry off, but he'd refused.
Anyway, i enjoyed the story. It had a good basis and needs some work, but it is a smart and swift read.