Watch the show and make up your own mind. I've seen too many people regurgitating the same "SEASON 1 IS AMAZING, SEASON 2 IS THE WORST OF ALL TIME" junk, and it's simply not true.
Fact of the matter is this is an anthology series. Different people, different stories, different feels. If they wanted a show with 3 seasons of Matthew McConaughey and Woody Harrelson, they would have done that.
Some detective stories are eerie and disturbing. Some are broody and slow burning. Season 2 is the latter, and all the hate it gets for basically not being exactly like the first season detracts from the performances and character arcs within.
There are also a lot of complaints about Vince Vaughn? Aside from some stiff writing, I hardly see the issue. He's got some great scene-chewing moments as a brutal crime boss!
I honestly can't believe some publications labeled this as one of the worst seasons of television in 2015. Just goes to show that some people have no clue how to manage their expectations, and this site is no different. Look at what I've said, and now put it up against so many here...it's ridiculous.
Like I said: watch it and make up your own mind. I avoided it for 5 years because of this site and I regret it. Season 2 isn't season 1, just like season 3 isn't 1 or 2. If you want the same thing over and over again, watch CSI.