Pied Piper (TV series)

Pied Piper focuses on a police negotiation task force that specializes in tense, worst-case scenarios that require highly trained communication. They handle all sorts of cases, from suicide to hostage situations to terrorist attacks, and even war. They do their work with words, not weapons, to neutralize volatile situations before they erupt into full-blown catastrophes.

Joo Sung-chan (Shin Ha-kyun) is a genius lead negotiator of the crisis negotiation police unit. Meanwhile, Yoon Hee-sung (Yoo Jun-sang) is the anchor of TNN Night News channel. Yeo Myung-ha (Jo Yoon-hee) is an inspector of the Crisis Negotiation Team.

• Shin Ha-kyun as Joo Sung-chan – A genius negotiator in the past, currently an outside advisor of the police Crisis Negotiation Team
  • Choi Won-hong as young Joo Sung-chan
• Jo Yoon-hee as Yeo Myung-ha – An inspector, Crisis Negotiation Team member
  • Jeon Min-seo as young Yeo Myung-ha
• Yoo Jun-sang as Yoon Hee-sung – The real Pied Piper, an anchor of TNN Night News channel
• Lee Shin-sung [ko] as Jung Soo-kyung – A Pied Piper

• Jung Gook-hwan [ko] as Seo Geon-il – K-Group chairman
• Choi Won-hong as Seo Joon – Seo Geon-il's son
• Park Sung-geun [ko] as Kang Hong-seok – K-Group management director, chairman's brother-in-law
• Kim Hong-fa [ko] as Jung Tae-soo – a member of Assembly

• Jo Jae-yoon as Han Ji-hoon – SWAT team leader
• Lee Jung-eun as Oh Ha-na – police officer of general switchboard 112
• Yoo Seung-mok as Gong Ji-man – Crisis Negotiation Team leader
• Oh Eui-shik as Choi Sung-beom – Sergeant, digital forensic expert
• Jang Seong-beom as Jo Jae-hee – Sergeant, profiler
• Kim Jong-soo as Yang Dong-woo – Seoul district police chief

• Jung Hae-na [ko] as Yoon Bo-ram – TNN channel social affairs reporter, Yoon Hee-sung's junior

• Go Yoon as Jung Hyun-ho – brother of the victim who died during the hostage kidnapping in the Philippines
• Kim Ji-eun as Part-timer at the PC room
• Jung Dong-gyu [ko] as director Lee Joon-kyung
• Park Ji-hwan as Heo Tae-woong – the bank robber
• Kwon Hyuk-joon – attempts suicide on the Han river bridge
• Woo Jung-gook [ko] as Kim Jae-gon
• Kwak Dong-yeon as Gong Jung-in – Gong Ji-man's son
• Park Choong-seok [ko] as Noh Kyung-seok – former TNN syndicate president
• Lee Kan-hee as Moon Ji-hye – a doctor, Oh Jung-hak's friend
• Kim Ik-tae [ko] as judge
• Park Hyo-seon
• Gong Ye-ji [ko] as Yeon Joon-hee
• Kim Ki-moo [ko] as Goo Dong-man
• Park Shi-in as Jung Chan-gyu
• Shin Cheol-jin as Shin Won-chang
• Ham Sung-min as PC cafe customer
• Kim Byung-choon [ko] as factory magamement director
• Na Kwang-hoon [ko]
• Cha Soon-hyung [ko]
• Kim Jung-seok as factory's CEO
• Yang Fan
• Cao Fei Fei as Shanshan
• Lee Won-jong as detective Lee Cheol-yong
• Lee Hae-young [ko]
• Heo Min-young
• Yoo Joon-hong [ko] as airplane hacker
• Kim Ji-eun [ko]

• Sung Dong-il as Oh Jung-hak – former Crisis Negotiation Team leader
• Kim Min-seo as Lee Joo-eun – Joo Sung-chan's lover
• Lee Moo-saeng as Prosecutor (Ep.6)