In Woo tries to get close with Dong Sik after secretly following him and seeing him kidnap Ji Hoon. In Woo becomes the director of the Asset Management Team and promotes Dong Sik to assistant manager. Dong Sik later finds out that he had written a suicide note on the day of killing the homeless man and is thrown into confusion. Meanwhile, Bo Kyung, who is after the serial killer, starts to find Dong Sik's behavior strangely suspicious.
서지훈을 납치한 육동식을 미행하고 동식에거 접근하는 서인우 인우의 총애와 실적에 힘입어 대리로 승진한 동식은 본 인이 유서를 썼었다는 사실을 알게 된다.
한편 연쇄살인사건을추적하던 심보경은 동식의 수상한 행적을 쫓기 시작하는데..!
