Stranger Things wasted little time stunning audiences when its first season dropped on Netflix back in 2016. An unexpected hit at the time perhaps, in hindsight it's hard to see how it could have been anything but one because it isn't hard to see that it had all the ingredients for immediate success.
One of the most charming qualities of the science fiction phenomenon is the fact that it takes its cues from a host of classic '80s properties in order to create its own unique aesthetic - one that ironically sets it apart from everything else on television. It's a nostalgic thrill-ride capable of both giving you goosebumps and warming your heart - and it isn't often that something with that kind of range comes along.
Yes, Stranger Things is filled with nostalgic callbacks to the '80s, but it's also expertly put-together as the Duffer Brothers have crafted a story with so many intricate moving parts that you can't help but admire the scale of what you're watching. And within those intricacies, there are little nods to pop-culture, references to the real world, thematic symbolism and a lot of foreshadowing - all of which would have been impossible to pick up in the first watch.
With that in mind, as we anticipate Stranger Things 4, let's revisit the first three seasons and take a look at some of the things you probably missed the first time around.