"Stranger Things" is a NetFlix "supernatural science fiction horror web series." It is eight episodes of approximately 50 minutes each. We have been watching two episodes per evening for the past four nights.
Each episode is a cliffhanger, and the last episode leaves enough mystery to require a second season.
On a ten-point scale, 10 being best, I give it a 9. It has it's scary moments, puzzling moments, a little misdirection, and a lot of paranoia. My kind of net series.
Here is the wikipedia link - BEWARE - it has spoilers.