# Duel (South Korean TV series)

Duel (Korean: 듀얼; RR: Dyueol) is a 2017 South Korean television series starring Jung Jae-young, Kim Jung-eun, Yang Se-jong and Seo Eun-soo. It aired on OCN from June 3 to July 23, 2017 on Saturdays and Sundays at 22:00 (KST) for 16 episodes.

## Synopsis

Story about Jang Deuk-cheon (Jung Jae-young), a hardened detective cop whose daughter is kidnapped. He starts to chase down the suspect using the one clue he has: Two men with the same face were at the crime scene.

## Cast
### Main

* Jung Jae-young as Jang Deuk-cheon
* Yang Se-jong as Lee Sung-joon / Lee Sung-hoon / Lee Yong-seob
* Kim Jung-eun as Choi Jo-hye
* Seo Eun-soo as Ryu Mi-rae

### Supporting
#### People around Jang Deuk-cheon

* Lee Na-yoon as Jang Soo-yeon
* Yoon Kyung-ho as Lee Hyung-sik
* Choi Woong as Na Soo-ho

#### People around Choi Jo-hye

* Lee Ye-eun [ko] as Na Song-yi
* Lee Sung-wook as Go Bon-seok

#### People around Ryu Mi-rae

* Kim Ki-doo [ko] as Kim Ik-hong

#### Extended

* Lee Cheol-min [ko] as Park Yoo-shik
* Im Il-gyu [ko] as Cha Gil-ho
* Shim Wan-joon as Yang Man-choon
* Jang Ri-woo as Yang Man-choon's subordinate
* Kim Kwang-seob [ko] as Yang Man-choon's subordinate
* Joo Boo-jin as Jang Deuk-cheon's landlord
* Kim Ji-yoo as Ahn Hye-joo
* Jo Jae-ryong [ko] as Jin Byung-joon
* Jo Jae-wan [ko] as Choi Joo-sik
* Lee Hae-young as Park Dong-seul
* Jung Jin-seo as Park Min-ji
* Kang Tae-ho as Kang Hyun-geun
* Choi Kwang-je as Department Head Baek
* Jung Doo-gyum [ko] as Oh Byung-cheon
* Kim Si-eun as Joo-ah
* Yoo Ha-bok [ko] as Director Han
* Kim Nan-hee as Kim Hye-jin
* Kim Dong-beom as Cha Ki-dong
* Song Joon-hee as Lee Sung-hoon
* Kim Bo-jung [ko] as Ryu Jung-sook
* Jo Soo-hyang as Park Seo-jin
* Uhm Soo-jung [ko] as Han Yoo-ra
* Park Ji-il as Park San-young
* Kang Ji-hoo [ko] as Park Seo-ryong
* Choi Beom-ho [ko] as Jang Soo-yeon's doctor-in-charge

### Special appearances

* Joo Suk-tae [ko] as Ahn Jung-dong (Ep. 1)
* Ha Ji-eun [ko] as Hye-joo's mother (Ep. 1)
* Jung Soon-won as Operating victim (Ep. 1)
* Cuckoo Crew (Ep. 2)

## Production

* Screenwriter Kim Yoon-joo is known for her hit drama Nine: Nine Time Travels, which was also co-produced by Chorokbaem Media (Duel's co-producing company).
* Duel reunited Yang Se-jong and Seo Eun-soo, who appeared together in SBS's hit medical drama Dr. Romantic in 2016.
* First script reading took place March 31, 2017 in Sangam-dong, Seoul, South Korea.

## Ratings

* In this table, the blue numbers represent the lowest ratings and the red numbers represent the highest ratings.
* N/A denotes that the rating is not known.
| Ep. | Original broadcast date | Average audience share | Average audience share | Average audience share |
| Ep. | Original broadcast date | AGB Nielsen | AGB Nielsen | TNmS |
| Ep. | Original broadcast date | Nationwide | Seoul | Nationwide |
| 1 | June 3, 2017 | 2.028% | 2.385% | 1.2% |
| 2 | June 4, 2017 | 1.938% | 2.160% | 1.2% |
| 3 | June 10, 2017 | 1.966% | 2.431% | 1.2% |
| 4 | June 11, 2017 | 2.182% | 2.853% | 1.2% |
| 5 | June 17, 2017 | 1.502% | — | 1.1% |
| 6 | June 18, 2017 | 1.949% | 2.390% | 1.6% |
| 7 | June 24, 2017 | 1.530% | 1.998% | 1.2% |
| 8 | June 25, 2017 | 1.796% | 2.098% | 1.3% |
| 9 | July 1, 2017 | 1.666% | 1.968% | 1.0% |
| 10 | July 2, 2017 | 1.703% | 1.905% | 1.3% |
| 11 | July 8, 2017 | 1.567% | — | 1.3% |
| 12 | July 9, 2017 | 1.730% | 1.958% | 1.6% |
| 13 | July 15, 2017 | 1.426% | 1.570% | 1.3% |
| 14 | July 16, 2017 | 1.598% | 1.647% | 1.3% |
| 15 | July 22, 2017 | 1.316% | — | 1.4% |
| 16 | July 23, 2017 | 1.668% | 1.629% | 1.5% |
| Average | Average | 1.723% | — | 1.3% |