Guest Stars Kim Tae Hoon as Prosecutor Oh Jae Won Park Jung Hak as Lee Doo Kwang Kim Jung Hak as Detective Park Chang Joon Hwang Seung Eon as Yang Yoo Jin Kwon Min as Nam Gun Wook Park Sung Taek as Kim Do Sik Ahn Byung Kyung as Broker of Contract Killer Kim Hye Yoon as Oh Ji Yun