This series is an adaptation of a book and I preferred the plot in the book. With that being said, I have never hated a fictional villain the way I hate "Stephen", you have never seen a sociopath like him on TV.
And I can relate to Lucy because in my younger years, I was a bit like her, not selfish but plain stupid, refusing to see the bad behaviors in others and just sticking with the ugliness.
This series is toxic but then there are lessons and it makes you question yourself.