That is some rare diamond of the year.<br /> German's know how to make a great story.<br /> It's first original German series I could not stop watching.<br /> Really wonderfully thought out and complex story with a lot of characters, but uncovering connections between each other and their part in the story, makes you cringe to find out more and more. Constant unknown and new question keep the suspense, which never dies till the end of the season and even then gives more questions to ask and hope to see next season to get answers to wtf is going on. Even paranormality is shown in a very subtle way. Keeping track takes effort and thinking and that's a great part of the series. Wonderful cinematography and visual telling style chains you not to miss anything what you see. Because it's German series, it makes acting and relations in the story between characters feel more realistic and close to everyday life. <br /> Later seasons goes more into time travel stuff and paradoxes, but it keeps story very strong, till the end. The complexity to follow story increases, but the way writer keeps it not messing up is amazing. Series have one of the most satisfying ends in this kind a Series, and brings almost all questions to the conclusion, without leaving holes in story. Real German work ;)