I recall reading that many people didn't like the show because it was "slow." But I don't find it slow at all. I find it cerebral and quite masterful at characterization. There's something in every episode that makes you reconsider where you thought the story was going. And in retrospect, all the information you need to get the right hunch to solve the mystery is there, but they don't spell it out for you. I love that this show makes the viewer think, and invest themselves in the characters.