Kim Moo-chan

Park Hae-jin

Kwon Seok-joo

Park Sung-woong

Joo Min

Kwon Ah-reum

Joo Hyeon

Lim Ji-yeon

Ban Sang-jae

Kwon Do-hyung

Min Ji-young

Kim Yoo-mi

Hong Soo-min (Min Ji-young's Secretary)

Chae Ri-eun

Choi Jin-soo

Shin Jung-geun

Byun Woo-taek

Ahn Young-hoon

Lee Min-soo

Kim Kwon

Han Jung-soo

Kim Jung-hwan

Chae Do-hee

Choi Yu-hwa

Jung Hye-mi

Gong Do-eun

Kim Ji-hoon

Seo Young-ju

Jeong Soo-hyun

Jeong Soo-hyun

Joo Min

Kwon Areum

Student

Yeon Se-ryeon

Nurse (Eps 4-5)

Kim Mi-ji

KCSI Investigator

Ok Il-Jae

Victim's Family

Kim Hyun-Chang

Passerby

Park Shin-woo

NTBS Announcer

Lee Yu-an

Housekeeper

Lee Sang-hee

SBNS Director

Yoon Jong-won

Kwon Na-rae

Kang Hye-rin

Kim Ji-hoon (Young)

Jin Jae-hee

Detective

Ahn Jung-ho

Seorae High School Bully

Lee Dong-gi