The Smile Has Left Your Eyes

A detective thinks about quitting his job. He takes on a female university student murder case that was disguised as a suicide. The detective becomes obsessed with solving the case. He has a young sister and she meets a man. The man does not remember when he was little. He is not a good person, but she has sympathy for him. The detective tries to push the man away from his younger sister. The detective suspects that the man is somehow involved in the female university student murder case. The man and the detective's younger sister fall in love.

Directed by Song Hye-jin, The Smile Has Left Your Eyes leans on a strong ensemble — Seo In-guk, Jung So-min, Park Sung-woong — to carry a story that balances spectacle with character.

The series landed with audiences for its craft and performances, and remains one of the most talked-about mystery titles of 2018.