Kim Seo Hyung (SKY Castle) has accepted a starring role in the new Korean drama Nobody Knows. Nobody Knows is a police drama about a violent crimes detective whose close friend was murdered by a serial killer when they were young that works to find the culprit after murders start again in the present. She will play the detective.
An offer is still out to Ryu Deok Hwan (Special Labor Inspector Mr. Jo) to play a middle school teacher.
Nobody Knows is hoping to air in early 2020 on SBS.