Lee Seung-gi
Jung Ba-reum (20 eps)
Lee Hee-jun
Go Moo-chi (20 eps)
Park Ju-hyun
Oh Bong-yi (20 eps)
Kwon Hwa-woon
Sung Yo-han (20 eps)
Kyung Soo-jin
Choi Hong-ju (20 eps)
Woo Ji-hyeon
Koo Dong-koo (20 eps)
Jo Jae-yun
Daniel Lee (20 eps)
Kim Young-jae
Go Moo-won (20 eps)
Kim Min-kyung
Song Soo-jung's Mother (5 eps)
Kim Jung-nan
Sung Ji Eun (4 eps)
Hyun Bong-sik
Bok Ho Nam (4 eps)
Chun Jung-Ha
Na Chi-Kook's Mom (4 eps)
Lee Seo-jun
Na Chi Kook (4 eps)
Kim Yeong-ok
Oh Bong Yi's Grandmother (3 eps)
Kim Kang-hoon
Young Jae-hoon (3 eps)
Yoon Seo-hyun
Kang Ki-Hyeok (3 eps)
Pyo Ji-hoon
Shin Sang (3 eps)
Song Boo-gun
Song Soo-Ho (3 eps)
Kim Ha-eon
Kim Han-kook (3 eps)
Ahn Nae-sang
Park Du Seok (3 eps)
Seon Ah Rin
Jo Mi-Jung (3 eps)
Park So-yi
Young Choi Hong-joo (2 eps)
Jo Yeon-ho
Young Go Moo-won (2 eps)
Joo Ye-rim
Young Oh Bong-yi (2 eps)
Ahn Jae-wook
Han Seo Jun (2 eps)
Son Woo-hyeon
Kim Joon Sung (2 eps)
Bae Seong-il
Detective Interviewing Jae Hoon (2 eps)
Kang Mal-geum
Jung Ba-Reum's Aunt (2 eps)
Song Min-jae
Young Go Mu-chi (2 eps)
Cherish Maningat
Kim Han-Kook's Mother (2 eps)
Park Eun-young
Staffing Agency Woman (2 eps)
Jung Eun-pyo
Kang Duk Soo (2 eps)
Kwak Min-ho
Prisoner (2 eps)
Park Hye Na
Byun Soon-Young (2 eps)
Park Ki-ryung
OBN News Chief (2 eps)
Byun Yun-jeong
Mrs. Oh (2 eps)
Kim Young-Joo
Sherlock Hong-Ju staff (2 eps)
Shim Yoo-Seung
Sherlock Hong-Ju staff (2 eps)
Cho Wan-ki
Reporter Yang (2 eps)
Suh Dong-hyun
Teenage Go Moo-chi (1 eps)
Seo Jeong-yeon
Go Moo-chi's Mother (1 eps)
Jeong Kang-hee
Go Moo-Chi's Dad (1 eps)
Kim Kyeol
Jae Hoon's Father (1 eps)
Kim Dong-ha
Jae Min (1 eps)
Ahn Seo-Yeon
Jae Hee (1 eps)
Seo Woo-jin
Young Jae-hoon (1 eps)
Jang Ui-don
Attorney Hwang (1 eps)
Jeong Seok-yong
Woo Jae Pil (1 eps)
Park Jae-wan
Police Commissioner (1 eps)
Ha Yeong
Song Soo Jung (1 eps)
Lee Do-Hyung
Jung Ba-Reum's Uncle (1 eps)
Jung Ae-ri
Choi Young-Shin (1 eps)
Yoo Ha-bok
Shin Sung-Min (1 eps)
Min Eung-sik
Shin Jae-Hyung (1 eps)
Park Yong
Kim Ji-Wan (1 eps)
Yoon Bok-sung
Jung Joong Suk (1 eps)
Lee Ja-ryeong
Kim Woo Seon (1 eps)
Kang Moon-kyung
President (1 eps)
Sung Chan-ho
Government Official (1 eps)
Lee Jae-Eun
Koo Dong-Koo's Mom (1 eps)
Yoo Yong
Sisters Killer (1 eps)
Im Yu-ran
Witness (1 eps)
Kang Chan-yang
Nurse (1 eps)
Kim Mi-hye
Jae Hoon's Teacher (1 eps)
Song In-seop
Prison Doctor (1 eps)
Kim Ro-sa
Student's Mom (1 eps)
Jung Nan-Hee
Teacher (1 eps)
Kang Suk-won
Male Talk Show Guest (1 eps)
Oh Ji-young
Female Talk Show Guest (1 eps)
Jang Jae-kwon
Second Male Talk Show Guest (1 eps)
Eom Hye-soo
Police Officer (1 eps)
Kim Joo-ah
Orphanage Employee (1 eps)
Chae Yeon Hee
Grocery Store Employee (1 eps)
Kim Borana
Hostess Bar Manager (1 eps)
Kang Ro-Chae
Park Hye Won (1 eps)
Kim Hyo-gyeong
Byun Min-Ji (1 eps)
Kim Sung-kyung
Fact Check host (1 eps)
Yang Ha-Yoon
Min-Jung (1 eps)
Oh Min-joon
Bully (1 eps)
Choi Yi-sun
[Motorcycle deliveryman] (1 eps)
Han Chang-hyun
Government Employee (1 eps)