Good British actors, interesting subject, beautifully shot, but all together some kind of misunderstanding. Heroes do not catch on, dialogues are spelled out poorly and sometimes even stupid, attempts at humor are unsuccessful.
The emphasis is shifted from investigation and mystery to the personal lives of the characters and their experiences, which makes the series not very watchable + too many episodes. If we did a miniseries (3-4 episodes), I think it would be a better solution.