A crazed serial killer's ruthless murders have left the entire nation gripped with fear and chaos reigns. Justice-seeking rookie police officer, Jung Ba Reum, comes face to face with the killer. While he survives his dangerous encounter with the psychopath, Jung Ba Reum finds his life completely changing. A suspenseful story that asks the key question, "What if we could identify psychopaths in advance?"
| # | Title | Airdate |
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| 1 | Mar 3, 2021 | |
| 2 | Mar 4, 2021 | |
| 3 | Mar 10, 2021 | |
| 4 | Mar 11, 2021 | |
| 5 | Mar 17, 2021 | |
| 6 | Mar 18, 2021 | |
| 7 | Mar 24, 2021 | |
| 8 | Mar 25, 2021 | |
| 9 | Mar 31, 2021 | |
| 10 | Apr 1, 2021 | |
| 11 | Apr 8, 2021 | |
| 12 | Apr 14, 2021 | |
| 13 | Apr 15, 2021 | |
| 14 | Apr 21, 2021 | |
| 15 | Apr 22, 2021 | |
| 16 | May 5, 2021 | |
| 17 | May 6, 2021 | |
| 18 | May 12, 2021 | |
| 19 | May 13, 2021 | |
| 20 | May 19, 2021 | |
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Apr 7, 2021 | |
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May 10, 2021 | |
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May 20, 2021 |