This show is great, for those who love thriller sci-fi movies. This show revolves around time-travel and fractured relationships. The acting is great, the story is mind-twisting and a bit confusing(really),I mean you will have to remember EACH AND EVERY character and his/her relation in order to understand movie at its best. It involves JAW-DROPPING twists(the best part). The background is sooo good, I mean it completely matches with the emotion.
The first two seasons were best. The only problem with the third season was that it was a bit slow and had some loose-ends(I mean no proper results of the action),you will find first few episodes of 3rd season a bit boring but I tell you watch the whole season then you will be amazed (again there is a twist).Other problem is that few questions remain unanswered(which happens in many series btw)
But overall this show is great and first 2 seasons were super. you will enjoy every episode of first 2 seasons and almost every episode had a twist.