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One of the Grasshoppers gets away from the police. The other two Grasshoppers confess that they only know him as Han Tae Woong, although that name turns out to be a fake identity. The investigation reaches a dead end and Ji Seok is about to be reassigned to a remote island. Ryung comes up with a plan to save Ji Seok and to catch the Subway Ghost.
Gi So-you
[Lee Man Jin's third daughter]
Ki Do-hun
Kim Woo-Hyeok
Park Ji-yeon
Park Ho-san
Lee Jun-hyeok
Chief Kong
Ahn Seung-gyun
Kang Soo-Ho
Jo Jae-yun
Lee Man-Jin
Jung Yoo-jin
Ha Ma-Ri
Kim Seon-ho
Ko Ji-Seok
Moon Geun-young
Yoo Ryung
Ahn Sang-woo
Jeon Won-Chool
Song Ok-suk
Kim Hyeong-Ja
Song Sang-eun
Park Mi-Hyun
Kim Jung-young
Choi Kyung-Hee
Nam Kee-ae
Han Ae-Sim