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Oh Hyun-jae (Jang Hyuk) was a genius profiler who cracked many cold cases using his unsurpassed profiling skills. One day, his fiancée was killed in an explosion set by a serial killer and Hyun-jae lived in seclusion after that. Five years later, a new murder takes place using the same method as that serial killer. While investigating the case, team leader Hwang Ha-young (Jin Seo-yeon) meets a detective from the countryside, Cha Soo-young (Choi Soo-young), who has a photographic memory. She introduced Soo-young to Hyun-jae and they work together to go after the serial killer.
Tell Me What You Saw : South Korea viewers per episode (thousands)
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Season
Episode number
Average
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
546
902
436
901
631
926
N/A
901
N/A
945
678
958
707
977
601
1192
N/A
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 drama 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
Due to some ratings not recorded, the exact average rating is unknown.