After watching all four seasons I can say that this is one of the best sci-fi/horror shows in a while but it is quite un-even. The first season is great, I would say 9/10, but it noticeable goes down for season 2 and 3, 6/10 for those, to then be picked up for the last season to be back as the first season of 9/10.

Reason is that the first season was actually a bit scary with the "monster" being an unknown entity and the protagonist isn't the immortal super hero she becomes later. Granted in the last season she is also a super-hero but she is not available, for most of the season, to do her super-hero thing and the protagonist background is shown and it is quite interesting. Just wished they went more into his journey and focused less on the kids.

Season 2 and 3 are bad because the monsters there are not scary at all but more comical and weird and too much time is focused on showing how awesome girls are.

But all in all it is quite of an entertaining show but you have to look past the typical feminist tropes. I.e. Girls/women are good/strong where as men are mostly stupid/weak. In fact I don't think there is a single "bad" female in the show but plenty of white male one's.