Hwang Jae-yeol

as Citizen

as Detective Park

as Homeroom teacher

as Mr. Park

as Choi

as Sang Hun [Convenience Store Owner from North Korea]

as Detective

as Jung Jae Min

as Park Dong Chan

as Detective Ki-won

as Jung Hyun-wo Dad (Eps 1, 2)

as Detective Jung

as Chung Yu Cheol

as Detective Song

as [Detective]

as Obese

as Man-cheol

as Mr. Kim

as Control Team Leader #1

as Jeong Du-man (Detective)

as Gap-doo

as Kim Yoo-Chul [Detective]

as Hong-gyu

as Ki Dong Su

as Patient's Son

as Navigator

as Kim Myeong-bae

as [Sangdo Express Union member]

as Ganghwa Detective

as [Gambling House Manager]

as Detective Go

as suit man