With Na-hee exposing her identity, everyone discovers that So-mi's the Mafia, placing Na-hee in danger with her police role now known. Holding herself responsible for her friends' deaths, Na-hee devises a plan to unveil the Mafia even after her potential death. Although clues surface, they are too ambiguous to conclusively identify the Mafia. Meanwhile, the focus shifts to Mi-na as the next target in the voting process.
Lee Jae-in
Lee Yoon-seo
Kim Woo-seok
Kim Jun-hee
Choi Ye-bin
Oh Jung-won
Cha Woo-min
Ko Kyung-jun
Ahn Ji-ho
Jin Da-bum
Jeong So-ri
Kim So-mi
Kang Seol
Choi Mi-na
Oh Jung-taek
Cha Yu-jun
Song Byeong-geun
Im Eun-chan
Kim So-hee
Baek Eun-ha
Bae Jae-young
Kim Jin-ha
Chun Young-min
Park Ji-soo
Suh Dong-hyun
Park Woo-ram
Do Byeong-hun
Kim Dong-hyun
Hong Min-gi
Jang Hyun-ho
Park Ju-won
Ahn Na-hee
Park Yoon-ho
Heo Yul
Kim Gyu-bin
Lee Joo-young
Hong Seong-pyo
Nam Yeon-woo
Park Sang-eun
Shin Seung-bin
Kim Min-seo
Choi Ju-won