Seo Yeaji has been through so much this year, and her acting is amazing for this comeback. I can feel the character's emotions, and I just think her acting is so well that it draws you in.
The OST at the end is perfect. The lyrics are extremely representative of Ms.Seo's character.
I also want to say that the woman who plays Han SoRa is also an amazing actress. She shows her character's anxiety and anger so well.
The men and husband's also act well, especially the actors that play Yoon Gyeom and EunPyeong. Them and Han SoRa's actress play obsession amazingly.
This story is almost the perfect revenge plot (so far).