Stranger Things (Season 3) is back on track after a iffy second season. We return to the formula from Season 1: kid-adulthood, adult dysfunction, and a dark mirror-version of the town, below ground, where bad things come from. Season 2 was desperate to impress on us new characters and show that the kids are growing up. This season achieves so much more, without telegraphing the message along the way. The CGI is better too. The whole season seems more comfortable with itself, because it’s not trying so hard.