Guest Stars Lee Sun Bin as Jo Mi Joo Jo Woo Jin as Ahn Tae Wook Kim Joo Hun as Investigator Park Jung Do Won as Investigator Kim Heo Jae Ho as Jang Hak Joo Jung In Gi as Sa Jae Sung Song Ok Sook as Noh Bang Shil Go Kyu Pil as Jung Ja Wang Kim Joo Ri as Choi Ji Yun Ahn Nae Sang as Chun Gab Soo Lee Duk Hwa as Chairman Wang Kim Hong Fa as Bang Pil Kyu Jang Myung Kab as Kim Gyu Shik Im Hyun Sung as Bang Ho Suk Kim Ji Sung as Bang Min Ah Jo Jae Ryong as Shim Yong Jae Choi Chan Sook as Sung Il's Mother Jung Dong Kyu as Jin Sun Hwan