Cheol-taek

Pal-bok

Manager Choi

Deok-gil

police chief

Samuel’s father (2 episodes)

Chairman Min

Uiju

Ki

Mansoo

Mr. Seo

President

Old Actor

Dong-in

Joong-man

Jong-hwan

Younghwan

Changsoo

President Kim Jong-il

CEO

Mo Geum-san

Ji-young's Father

Ahn

Taxi Driver

Jae-ha's father

Yeogak owner

Je Mul-po (16 episodes)

Kim Wonho

Detective Squad Chief

Butcher Mr. Kim

Park Choon-bong (12 episodes)

Man in Suite

소장 (8 episodes)

Chief Choi

Jo Jun (uncredited)

Byeongjoo

Department head Choi (10 episodes)

Mr. Kim

Jung Gyu-jik (20 episodes)

Coroner

Hyung-doo

Seong-soo's Stepfather

Ear Doctor Han

Therapist

Hyun Sung-bong

Hoowon

(1 episode)

Mr. Wang

Dispatch chief (15 episodes)

Producer

Curator of Tongyeong's Local History Museum

Ji-hye's Father

Director Baek (cameo)

Ji Nam-Cheol (16 episodes)

Hong-soo

Man at Cousin's House

Noh Jung-pil (17 episodes)

Mr. Ha

Cha Chul-soo (17 episodes)

Mr. Jang

Park Joon-gil (24 episodes)

Hwang Do-chul (16 episodes)

Father Moon

Lee Dae-hoon (16 episodes)

Squad leader Hwang

Uncle

Jung Sang-gook (24 episodes)

Yu Sang-hwan's Father

Yoon Hwan-shi (106 episodes)

Captain Park

Detective 1

Hwang Jong-chul

Director Kim

Lieutenant detective

Chairman Yoon

Jeong Il-seong

Officer Jang

Police Chief

Sergeant Kim

Squad Leader Lee

Bae Sang-doo (24 episodes)

OB / Gyn Doctor (uncredited)

Han Ju-tae's father (uncredited)

Engineer Peng

Song Haeng-ki

Sang Chun-man

Manager

Writer Lee

Mustache

Director of Student Affairs

Woo-in's Brother-in-Law

General Pyo

Auto Repair Boss

Kwak-jung

Funeral Director

Chief of Criminal Unit

Lonely Man

Father