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The Subway Ghost’s hideout is finally uncovered. Through the evidence found in the hideout, the police slowly start to piece together the Subway Ghost’s identity. Meanwhile, Ryung’s illegal investigations in the tunnels come to the attention of the commissioner and Ji Seok faces the biggest crisis in his career.
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