Pemeran The Good Detective

Son Hyun Joo

as Kang Do Chang

Pemeran Utama

Jang Seung Jo (장승조)

as O Ji Hyeok

Pemeran Utama

Lee Elijah

as Jin Seo Kyung

Pemeran Utama

Oh Jung Se

as Oh Jong Tae

Pemeran Utama

Ji Seung Hyun (지승현)

as Yoo Jung Seok

Pemeran Utama

Son Jong Hak

as Moon Sang Beom

Pemeran Pembantu

Cho Hee Bong

as Woo Bong Shik [Detective]

Pemeran Pembantu

Shin Dong Mi

as Yoon Sang Mi [Investigator]

Pemeran Pembantu

Yang Hyun Min

as Nam Gook Hyun [Detective]

Pemeran Pembantu

Cha Rae Hyoung

as Kwon Jae Hong [Detective]

Pemeran Pembantu

Kim Ji Hoon

as Byun Ji Woong [Detective]

Pemeran Pembantu

Jung Soon Won

as Ji Man Goo [Detective]

Pemeran Pembantu

Kim Myung Joon

as Shim Dong Wook [Detective]

Pemeran Pembantu

Son Byung Ho

as Kim Gi Tae

Pemeran Pembantu

Jo Jae Ryong

as Jo Sung Dae

Pemeran Pembantu

Jo Jae Yun (조재윤)

as Lee Dae Cheol

Pemeran Pembantu

Yoon Dae Yeol

as Choi U Jin

Pemeran Pembantu

Lee Sang Woon

as Song Gwang Hee

Pemeran Pembantu

Park Jung Min

as Go Gyung Ho

Pemeran Pembantu

Kim Ryeo Eun

as Yoon Ji Sun

Pemeran Pembantu

Lee Ha Eun

as Lee Eun Hye

Pemeran Pembantu

Baek Eun Hye

as Kang Eun Hee [Do Chang's sister]

Pemeran Pembantu

Jo Seung Yun

as Yoo Jung Ryul [Jung Seok's elder brother]

Pemeran Pembantu

Shin Jae Hoon

as ['Junghan Daily News' reporter]

Pemeran Pembantu

Kim Si Eun

as Lee Eun Hye [Young] (Ep. 1)

Bintang Tamu

Cheon Young Min

as Jang Yoo Na (Ep. 1-2, 6-7)

Bintang Tamu

Lee Hyun Wook (이현욱)

as Park Geon Ho [Missionary] (Ep. 1-4)

Bintang Tamu

Yoon Bok Sung

as [Judge] (Ep. 1)

Bintang Tamu

Kim Seung Tae

as [Minister of Justice] (Ep. 1, 9, 11)

Bintang Tamu

Shin Jung Yoon

as Reporter Seo (Ep. 2)

Bintang Tamu

Shin Jae Hwi

as Park Hong Doo (Ep. 2, 6-7)

Bintang Tamu

Shin Hee Gook

as [Cashier] (Ep. 2)

Bintang Tamu

Lee Seung Jun

as Lee Han Joo [Prison guard] (Ep. 3, 5, 7)

Bintang Tamu

Heo Woong

as Shin Geun Ho (Ep. 3, 10)

Bintang Tamu

Baek Jong Hwan

as [Distribution center employee] (Ep. 3)

Bintang Tamu

Son Seung Hun

as [Video forensics] (Ep. 4-5)

Bintang Tamu

Kim Seung Han

as Oh Ji Hyuk [Young] (Ep. 5)

Bintang Tamu

Jung Hwan

as Go Joon Sup (Ep. 5, 8)

Bintang Tamu

Lee Seung Hun

as So Jae Sub [Attorney] (Ep. 5-7)

Bintang Tamu

Woo Kang Min

as Ju Dong Pal (Ep. 6)

Bintang Tamu

Jung Ji Ho

as Jung Ki Moon [Reporter] (Ep. 6, 10)

Bintang Tamu

Baek In Kwon

as [Prisoner] (Ep. 6-7)

Bintang Tamu

Song Yo Sep

as Park Dong Chul (Ep. 7)

Bintang Tamu

Hwang Tae Kwang

as Jang Jin Soo (Ep. 7, 10, 13, 15-16)

Bintang Tamu

Lee Do Guk

as Jung San Il [Prosecutor] (Ep. 7-8, 16)

Bintang Tamu

Kim Byung Soon

as [Judge] (Ep. 7)

Bintang Tamu

Kang Hak Soo

as [Judiciary committee] (Ep. 7)

Bintang Tamu

Yong Jin

as [Police officer] (Ep. 9)

Bintang Tamu

Kim Tae Hoon

as Park Joon Young (Ep. 12)

Bintang Tamu

O Gyu Taek

as [Gawol church pastor] (Ep. 13)

Bintang Tamu

Park Kyung Geun

as Jin Sung Hwan (Ep. 14)

Bintang Tamu

Lee Gyu Ho

as [Gang boss] (Ep. 14]

Bintang Tamu

Kim Sung Yong

as [Attorney] (Ep.16)

Bintang Tamu

Kwon Oh Jin

as Park Jun Sung (Ep. 15-16)

Bintang Tamu

Richard Kim

as [Auction VIP]

Bintang Tamu

Woo Young Nam

as [Police officer] (Ep. 12)

Bintang Tamu

Nam Hee Soo

as Lee Se Jin [Dispatcher] (Ep. 1)

Bintang Tamu

Ko Dong Hyoung

as [Violent Crimes Team 1]

Bintang Tamu

Kang Ji Hoon

as [TV reporter] (Ep. 2)

Bintang Tamu

Yang Ji Woo

as [Playground kid]

Bintang Tamu

Park Byung Wook

as [Apt. security guard] (Ep. 8)

Bintang Tamu

Jo Joon

as Jo Byung Gil (Ep. 1,3)

Bintang Tamu

Seo Sang Won

as [Paramedic]

Bintang Tamu

Yoo Byung Sun

as [Wrecking yard employee] (Ep.12)

Bintang Tamu

Jung Tak

as Yoo Jung Seok [Young] (Ep. 11)

Bintang Tamu

Kwon Ji Hwan

as [Police officer] (Ep. 3)

Bintang Tamu

Ma Jung Pil

as Nam Sung Han [Secretary] (Ep. 2, 14)

Bintang Tamu

Kim Sung Joon

as [Auction bidder] (Ep. 1)

Bintang Tamu

Ahn Shi Ha

as Jung Yoo Seon [Jin Soo's wife] (Ep. 1, 3, 7-8, 10)

Bintang Tamu

Yang Hee Won

as Jae Woong [Eun Hee's son] (Ep. 4, 9, 11, 14. 16)

Bintang Tamu

Lee Yu Jin

as [Sung Dae's secretary] (Ep. 4)

Bintang Tamu

Park Ji Hwan

as [Eun Hui's ex-husband] (Ep. 4, 14, 16)

Bintang Tamu

Kim Seon Gyeong

as [Ji Hyuk's mother] (Ep. 5)

Bintang Tamu

Han Myung Chul

as [Victim's family) (Ep. 1)

Bintang Tamu

Dok Ko Kwang

as [Hong Doo's group] (Ep. 6)

Bintang Tamu

Lee Young Shil

as [Gook Hyun's relative] (Ep. 12)

Bintang Tamu

Jang Woo Yeon

as Yoon Ji Sun's Roommate (Ep. 4, 7)

Bintang Tamu

Park Se Jun

Composer

Jo Nam Gook

Sutradara

Choi Jin Won

Screenwriter