Untouchable () is a 2017 South Korean television series starring Jin Goo, Kim Sung-kyun, Jung Eun-ji and Go Joon-hee. It aired on JTBC from November 24, 2017 to January 20, 2018, every Friday and Saturday at 23:00 (KST) for 16 episodes.

Synopsis Untouchable is the story of power games and hidden secrets of the Jang family who has ruled the city of Bukcheon for three generations.

Cast Main Jin Goo as Jang Joon-seo, a detective squad chief and the second son of Jang clan who chases after the truth behind the death of his wife. Kim Sung-kyun as Jang Ki-seo, Joon-seo's older brother who turns corrupt like his father in order to survive. Jung Eun-ji as Seo Yi-ra, a prosecutor. Go Joon-hee as Goo Ja-kyung, Ki-seo's wife who is the only daughter of a former president.

Supporting Jang family Park Geun-hyung as Jang Beom-ho Choi Jong-won as Goo Yong-chan as Jang Beom-sik as Jang Gyu-ho Shin Jung-geun as Yong Hak-soo Ye Soo-jung as Park Young-sook

Police department Jin Kyung as Jung Yoon-mi Park Won-sang as Go Soo-chang Bae Yoo-ram as Choi Jae-ho as Lee Sung-kyun Park Ji-hwan as Goo Do-su

Others Kyung Soo-jin as Yoon Jung-hye Ji Yoon-ha as Yoo Na-na as Jo Taek-sang as Joo Tae-seob

Production The series is set in a fictional city called Bukcheon. The first script reading of the cast was held on August 17, 2017 at JTBC building in Sangam-dong.

Viewership

+ Average TV viewership ratings Original broadcast date Average audience share Nielsen Korea TNmS Nationwide Seoul Nationwide 1 November 24, 2017 2.300% 2.3% 2 November 25, 2017 3.324% 3.324% 2.8% 3 December 1, 2017 2.314% 2.1% 4 December 2, 2017 3.375% 4.269% 3.0% 5 December 8, 2017 2.400% 2.726% 1.9% 6 December 9, 2017 3.0% 7 December 15, 2017 2.564% 2.742% 8 December 16, 2017 3.373% 3.519% 9 December 22, 2017 3.043% 3.264% 2.3% 10 December 23, 2017 3.785% 3.759% 11 January 5, 2018 2.441% 2.2% 12 January 6, 2018 2.607% 13 January 12, 2018 rowspan="3" 1.9% 14 January 13, 2018 2.790% 2.6% 15 January 19, 2018 2.226% 2.1% 16 January 20, 2018 3.288% 2.995% 2.8% Average In the table above, the represent the lowest ratings and the represent the highest ratings. N/A denotes that the rating is not known. This series aired on a cable channel/pay TV which normally has a relatively smaller audience compared to free-to-air TV/public broadcasters (KBS, SBS, MBC and EBS).

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