Season 3 is near (Season 1 trailer above), and I can't wait as this show has begun to really find an identity of its own and allow its story lines to progress organically within its own world. This is by far the best show Amazon Prime has to offer, and, while it is a "hit," I'm sure it would have much more mainstream awareness if it was on a premium cable channel or Netflix.
I "almost" watched this show for a year or so, but just couldn't make myself get started. I always found something else instead. But man am I glad I finally did hit the play button. Somewhere along the line it gains traction and begins to take off from just an "interesting idea" to a thought provoking period piece with an eye towards character depth and development.
Not much more you can ask for when a show seems to steadily improve upon itself, going where the story takes it, not where someone has determined it should go.
Available on Amazon Prime, Amazon offers the first episode on Youtube for free. I've posted the link below. Be sure to change your quality to the highest rate for optimal viewing experience!