Time travel and similar topics is always interesting to me, so after seeing trailer even with scepticism I decided to give a try. And I'm glad I did. The storyline of the series is amazing, at each step it gives you only few clues with some unexpected twists and keeps you questioning what's going to happen next, while at the same time you try to solve it while it's a crime story too. I was also a bit surprised by seriousness of the topic they choose to deal and how they maturely portray it, with some really amazing story. Only bad part is ending, while it was a bit too quick and kind a cheap.