I'm almost near to the completion of the third season of Person of Interest and this is hand down the best season in the series. The first 10 episodes itself were the highlight reel. Great acting, superb action and an equally compelling storyline. I also have to commend the sound effects on this show, amazing detail is present in all the action sequences.
Also started Hemlock Grove and with just 3 episodes in, I'm lost as far as the storyline is concerned. I'm not sure if they explain it in the latter episodes, but the introduction wasn't really compelling. Will see how it goes though.