One wedding (is announced) and a funeral. Jang-yeol is unexpectedly sensitive to Ye-bun's suffering. Seon-woo's absence is marked as suspicious. Captain Jong-muk and his team are forbidden from investigating the serial killer case and are directed to "protecting people's livelihoods." As one suspect after another is eliminated, Jang-yeol goes back to the beginning and questions all of his conclusions. Ye-bun bursts into his home with a theory that connects all new dots in a terrifying way.
Han Ji-min
Bong Ye-bun
Lee Min-ki
Moon Jang-yeol
Suho
Kim Seon-woo
Joo Min-kyung
Bae Ok-hee
Yang Jae-seong
Jung Eui-hwan
Park Seong-yeon
Jung Hyeon-ok
Kim Hee-won
Won Jong-muk
Jung Yi-rang
Na Mi-ran
Cho Min-guk
Bae Deok-hee
Lee Seung-joon
Cha Joo-man
Park Hyeok-kwon
Park Jong-bae
Park No-shik
Jeon Kwang-shik
