The story of a man named Yook Dong-sik who coincidentally witnesses a murder and picks up the killer's diary. While fleeing the scene, he gets into a car accident causes him to lose his memory. Due to the diary in his possession, he mistakenly believes that he is a psychopathic serial killer.
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| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Episode 1 | 2019-11-20 | 90 min |
| Season 1 | Episode 2 | Episode 2 | 2019-11-21 | 90 min |
| Season 1 | Episode 3 | Episode 3 | 2019-11-27 | 90 min |
| Season 1 | Episode 4 | Episode 4 | 2019-11-28 | 90 min |
| Season 1 | Episode 5 | Episode 5 | 2019-12-04 | 90 min |
| Season 1 | Episode 6 | Episode 6 | 2019-12-05 | 90 min |
| Season 1 | Episode 7 | Episode 7 | 2019-12-11 | 90 min |
| Season 1 | Episode 8 | Episode 8 | 2019-12-12 | 90 min |
| Season 1 | Episode 9 | Episode 9 | 2019-12-18 | 90 min |
| Season 1 | Episode 10 | Episode 10 | 2019-12-19 | 90 min |
| Season 1 | Episode 11 | Episode 11 | 2019-12-25 | 90 min |
| Season 1 | Episode 12 | Episode 12 | 2019-12-26 | 90 min |
| Season 1 | Episode 13 | Episode 13 | 2020-01-01 | 90 min |
| Season 1 | Episode 14 | Episode 14 | 2020-01-02 | 90 min |
| Season 1 | Episode 15 | Episode 15 | 2020-01-08 | 90 min |
| Season 1 | Episode 16 | Episode 16 | 2020-01-09 | 90 min |
| Writing | Ryu Yong-jae | Writer |
| Directing | Lee Jong-jae | Director |
