I have just started the 2nd season, and I like what I have seen of the series so far, but the production quality leaves much to be desired.
For example, in the 1st season, a character that is supposed to be Russian has a French accent. In the 2nd season, a character that has a French accent has a brother, but the brother doesn't have a French accent. Another character has a doppelganger, and in one scene this person has the gray hair stripe on the wrong side of his head, but in the next scene it's on the correct side. Lots of mistakes like this throughout the series. Things like this make it very difficult to become immersed in the show.
For example, in the 1st season, a character that is supposed to be Russian has a French accent. In the 2nd season, a character that has a French accent has a brother, but the brother doesn't have a French accent. Another character has a doppelganger, and in one scene this person has the gray hair stripe on the wrong side of his head, but in the next scene it's on the correct side. Lots of mistakes like this throughout the series. Things like this make it very difficult to become immersed in the show.