A Trap - S1.E8

Yeo Wool receives a text message from Ms. Doh and goes down to her office. But when she gets there, she finds Ms. Doh lying down on the floor, unconscious. Yeo Wool quickly calls 911, but everyone suspects her because she was the first one to find Ms. Doh. Meanwhile, Na Yoon gives her statement to the police and takes Yi Chan with her.