Eh...I'm 5 eps in and it's just not bowling me over.
The "crusty, iconoclastic detective" character is a bit too trite.
If you had read the books first, you maybe would understand why he is the way he is. In the books, Harry is a Vietnam vet, a tunnel rat (a guy who would take a gun and go into the VC tunnels and kill any he found in close quarters). He's kind of fucked up. In the books, his age means he isn't computer savvy or cell phone savvy, just out to get justice for any victim. His mantra is "Everyone counts, or no one counts." A lot of it has to do with his mom and growing up a foster kid.
The show made him an Iraqi war vet, which was necessary for making it a modern day show, but that took away some of the nuances that makes him such a great character on paper. Even in the books, life is passing him by, and he knows it. He's getting close to mandatory retirement and has no idea what he's going to do with himself.
I prefer the books to the show, but I am still enjoying it a lot.