Kim Seo Hyung is more determined than ever in the third teaser of upcoming SBS drama Nobody Knows.Nobody Knows is about at-risk youth whose lives might have changed if they had been surrounded by good adults, and the adults who try their best to protect them. Kim Seo Hyung plays Cha Young Jin, a detective who has neglected her personal life for 19 years in order to achieve one goal. She might appear to be in ruins, but she is someone who has a warm heart.The teaser opens up with Cha Young Jin vowing, If theres any way left, Ill keep going. The only thing that takes priority in her life is solving the case, but theres a boy named Go Eun Ho (Ahn Ji Ho) who becomes her safe haven. His dream is to become a detective, and she does her best to give him advice as well as protect him.Then something happens to Go Eun Ho, and Cha Young Jin persistently digs into the case to save him. Lee Seon Woo (Ryu Deok Hwan) asks how he can help, and Baek Sang Ho (Park Hoon) says, From now on, Ill take responsibility of Eun Ho. Towards the end of the clip, Cha Young Jin promises, I will find out the story that you had to hide, the story that you dont even know.Watch the full teaser below!Nobody Knows premieres on March 2 at 9:40 p.m. KST and will be available on Viki!Source (1)