Scifi TV Stranger Things series 4 trailer (Netflix scifi series). February 14, 2020February 14, 2020 ColonelFrog Stranger Things 0 min read Here’s the trailer for the fourth series of scifi TV thang Stranger Things, in which it seems, as rumoured, that Hopper is indeed alive and a prisoner of the USSR, after saving Earth from beings from another dimension – and not a very nice one. Stranger Things series 4 trailer.