Pemeran Pied Piper

Shin Ha Kyun (신하균)

as Joo Sung Chan

Pemeran Utama

Jo Yoon Hee

as Yeo Myung Ha

Pemeran Utama

Yoo Joon Sang (유준상)

as Yoon Hee Sung

Pemeran Utama

Jeon Gook Hwan

as Seo Geon Il [K Group chairman]

Pemeran Pembantu

Kim Jong Soo

as Yang Dong Woo [Seoul district police chief]

Pemeran Pembantu

Park Sung Geun

as Kang Hong Suk [K Group Executive Dir., Gun' Il's bro-in-law]

Pemeran Pembantu

Yoo Seung Mok

as Kong Ji Man [Crisis Negotiation team leader]

Pemeran Pembantu

Jo Jae Yun (조재윤)

as Han Ji Hun [SWAT team leader]

Pemeran Pembantu

Jang Sung Bum

as Jo Jae Hee [Sgt., profiler]

Pemeran Pembantu

Oh Eui Shik

as Choi Seong Beom [Sergeant / Digital forensics expert]

Pemeran Pembantu

Jung Hae Na

as Yoon Bo Ram [TNN Channel social affairs reporter]

Pemeran Pembantu

Choi Won Hong

as Seo Joon [Seo Gun Il's son]

Pemeran Pembantu

Kim Hong Pa

as Jung Tae Soo [Assembly member]

Pemeran Pembantu

Kwak Dong Yeon (곽동연)

as Gong Jung In [Ji Man's son]

Pemeran Pembantu

Lee Shin Sung

as Jung Soo Kyung

Pemeran Pembantu

Lee Hae Young

as Chief Go

Pemeran Pembantu

Park Choong Seon

as No Gyeong Seok [Former TNN syndicate president]

Pemeran Pembantu

Woo Jung Kook

as Kim Jae Gon

Pemeran Pembantu

Jung Dong Gyu

as Lee Joon Kyung [Director]

Pemeran Pembantu

Shin Chul Jin

as Shin Won Chang

Pemeran Pembantu

Go Yoon

as Jung Hyun Ho [Kidnapped victim's brother]

Pemeran Pembantu

Lee Jung Eun (이정은)

as Oh Ha Na [Seoul 112 General Situation room team leader]

Pemeran Pembantu

Lee Won Jong

as Lee Cheol Yong [Detective]

Pemeran Pembantu

Sung Dong Il

as Oh Jung Hak [Former Crisis Negotiation team leader]

Bintang Tamu

Kim Min Seo

as Lee Joo Eun [Sung Chan's girlfriend]

Bintang Tamu

Kim Ji Eun

as [PC cafe part-timer]

Bintang Tamu

Ham Sung Min

as [PC cafe customer]

Bintang Tamu

Park Ji Hwan

as Heo Tae Ung [Bank robber]

Bintang Tamu

Park Jung Min

Bintang Tamu

Geum Kwang San

as [Service Company's man]

Bintang Tamu

Lee Gyu Sub

as [Thug] (Ep. 13)

Bintang Tamu

Uhm Chae Young

as [Crying girl]

Bintang Tamu

Park Yong

Bintang Tamu

Park Geon Gyu

as [man being Interviewed]

Bintang Tamu

Yang Fan

Bintang Tamu

Lee Joo Young

Bintang Tamu

Cha Geon Woo

as [Migrant protesting to protect his homeland]

Bintang Tamu

Kang Deok Jung

as [man in training]

Bintang Tamu

Jeon Min Seo

as Yeo Myeong Ha [Young]

Bintang Tamu

Kim Ik Tae

as [Judge]

Bintang Tamu

Lee Moo Saeng

as [Prosecutor] (Ep.6)

Bintang Tamu

Kim Goo Hyun

as [Investigation Chief]

Bintang Tamu

Cha Soon Hyung

as [Cheng Zhi's coworker]

Bintang Tamu

Lee Kan Hee

as Moon Ji Hye [Doctor / Jung Hak's friend]

Bintang Tamu

Gong Ye Ji

as Yeon Joon Hee

Bintang Tamu

Kim Ki Moo

as Koo Dong Man

Bintang Tamu

Kim Byung Chun

as [Park manager]

Bintang Tamu

Na Gwang Hoon

as [Cheng Zhi's coworker]

Bintang Tamu

Kim Jung Seok

as [Cheng Zhi's coworker]

Bintang Tamu

Jang Kyug Su

as [Detective]

Bintang Tamu

Yoo Joon Hong

as [Plane hacker]

Bintang Tamu

Moon Hak Jin

as [Ambulance driver]

Bintang Tamu

Park Tae San

Bintang Tamu

Kim Seo Yeon

Bintang Tamu

Kim Hong Seon

Sutradara

Ryu Yong Jae

Screenwriter