Wonderful 80s feeling and a really good plot. I liked first season for that mixed atmosphere of The Goonies and x-files and the nice idea of alternate universe. Also season two was good even if a little boring in some parts but overall a good season. The third season....not so good. I am at ep 3 or 4 and I keep watching it because I invested a lot of time in the first two seasons but how the things are developing....