I've been catching up with this show and I think it's 8/10 on my TV show scale. Definitely worth watching.
Also, if you liked "The Killing", I recently found great TV show - Midnight Sun, if you don't mind the subtitles
Peter Stormare (from American Gods, Fargo and others) is probably only face us westerns would recognize
http://www.imdb.com/name/nm0001780/reference
as for "11.22.63" it was really good, all the way until the last episode which kinda ruined it for me.