I have not read Jason Mott`s novel "The returned" which this show is based on, so I cannot be sure where the series is going to go. The pilot seems very similar to the French Sundance series by the same name. Either way, the pilot was very good. Can`t wait for the next episode.
I power-watched season 1 & 2. It is a pretty good series although season 2 gets a little hard to follow in the middle episodes. Still, if you like conspiracy/spy stuff, it is fun. The series does stretch it at times, but it works overall.