Overview
Nobody Knows is a 2020 South Korean television series starring Kim Seo-hyung, Ryu Deok-hwan, Park Hoon and Ahn Ji-ho. It aired on SBS TV from March 2 to April 21, 2020.
Ahead of the premiere, a webtoon depicting why Cha Young-jin became a detective was released on KakaoPage.
Synopsis
Still haunted by the death of her friend who was murdered 19 years ago by the infamous Stigmata serial killer, detective Cha Young-jin (Kim Seo-hyung) is determined to catch the culprit.
She soon joins school teacher Lee Sun-woo (Ryu Deok-hwan), and they do their best to protect the youth at risk, whose lives could have been changed if they had been surrounded by good adults.
From Wikipedia (CC BY-SA 4.0).