Only good thing about this series is its Cinematography. I am not sure about how much of this story is true but from what I have read about this incident its very biased towards some of the characters from the real life and the entire country. The only reason why I watched this series is because of its incredibly high ratings and amazing review written about it. Many people have said that its better than many horror movies which is not true, I didn't find any scene that's scary also I didn't find the story to be that interesting. Only reason why I think this series got such a high rating is because of the political reasons against Russian Government as the effect of the incident was presented in overly exaggerated way. I will suggest that its better to watch something better but If you are interested about this incident than go read the articles or watch some documentary.