Hwang Jae-yeol

as Citizen

as Detective

as Choi

as Control Team Leader #1

as Gap-doo

as Man-cheol

as Hong-gyu

as Navigator

as Ganghwa Detective

as suit man

as Homeroom teacher

as Detective Park

as Mr. Park

as Jung Jae Min

as Sang Hun [Convenience Store Owner from North Korea]

as Detective Song

as Detective Ki-won

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

as Park Dong Chan

as Detective Jung

as Obese

as Mr. Kim

as [Detective]

as Jeong Du-man (Detective)

as Kim Yoo-Chul [Detective]

as Patient's Son

as Ki Dong Su

as Kim Myeong-bae

as [Sangdo Express Union member]

as [Gambling House Manager]

as Detective Go [Police detective]