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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
Untouchable : South Korea viewers per episode (thousands)
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Season
Episode number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
495
595
N/A
547
N/A
711
Source: Audience measurement performed nationwide by Nielsen Korea.
In the table above, the blue numbers represent the lowest ratings and the red numbers 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).
Notes
The number of viewers was released on Nielsen Korea starting January 2018.
Due to some unpublished ratings, the exact average rating is unknown.
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Promotional poster