Seol Chang-hee

as Electronic surveillance specialist (1 episode)

as Interviewer (1 episode)

as Doctor (1 episode)

as Lee Ki-won (1 episode)

as Abang Sundae diner (1 episode)

as KMA HQ dormitory staff (1 episode)

as [NFS technician] (1 episode)

as [Villa detective] (1 episode)

as Hyun-young

as Blood Laboratorium Staff (1 episode)

as Cheol-san's co-worker (1 episode)

as Seo-joo's Husband (1 episode)

as Lawyer

as Reporter

as Seo-jin's Doctor

as Reporter

as Interviewer

as Police Officer

as Detective

as 20th Division Officer 2

as Reporter

as Emergency Room Intern

as Jin Sang Jo (16 episodes)

as Detective