Imagine if Dexter went for psychotherapy and that's enough info to describe the premise of this show without giving away too much. Solid acting from Steve Carell and I'm looking forward to seeing this evolve as the show moves forward. Make sure you watch it with little background noise or distraction as it's pure character discussion and nuanced details.
However, I recommend you save up episodes to watch as each episode is only 20 or so minutes long and this was a little frustrating and caused me to lose the feeling of atmosphere and investment in the story. No need to spoil the storyline by telling you anything here as it's a 'watch it for yourself' show. I went into it with little pre knowledge and feel that's a better way to watch most new shows.
Hope you enjoy as I have so far.