Means and Methods - S1.E6

To uncover the missing years in his investigation, Dong-jin reaches out to Eun-sil, the one person who has been close to Mi-jung since their university days. With her help, he uncovers more accidents and deaths tied to her, strengthening his theory. As the puzzle pieces fall into place, Dong-jin realises the only way truly to validate his findings is to put himself to the ultimate test.