https://youtu.be/RfZYFJsYmWo (no English subtitles on trailer)
Against my initial expectations, this, finally, turned out to be very good indeed. trajectory was;
Episode 1 - maybe not instantly gripping but worth continuing at least.
Episode 2 - definitely flagging; halfway through I left it, thinking would abandon. But I then went back to at least continue - and it really picked up. Subsequent episodes got better and better until the final tow were edge-of-the-seat stuff.
There was a grubbily realistic feel and look to the whole series. Light was harsh and unflattering and even those who were meant to be smart/attractive/elite-type still had some of these elements. And the grim settings always helped. Everything and everyone looked rather third-rate.
The story -centering on a group of very smart high-schoolers who fell under the spell of a charismatically evil leader - reminded me both of Unman, Wittering and Zigo and Secret History. (Tartt). There was a snake-like fascination in seeing how far the group would go and when/if they would be able to break the spell.
Very fine