The Smile Has Left Your Eyes (2018) [Haneureseo Naerineun Ireokgaeui Byeol] is a South Korean television series starring Seo In-guk, Jung So-min and Park Sung-woong. It is a remake of the 2002 Japanese television series Sora Kara Furu Ichioku no Hoshi. It aired on tvN from October 3, 2018 through November 22, 2018.
Homicide Detective Yoo Jin-gook (Park Sung-woong) takes on a murder case that was disguised as a suicide and becomes obsessed with solving it. But his younger sister, Yoo Jin-kang (Jung So-min), falls in love with Kim Moo-young (Seo In-guk), a man that is somehow connected to the murder. The detective tries to break the two apart because he knows the man isn’t a good person, but the young woman is too sympathetic towards to leave him.