A psychopath's ruthless serial murders have left the entire nation gripped by fear and chaos. An honest, justice-seeking rookie police officer and a veteran detective with a tragic past, face off against the killer. After their encounter with the psychopath, their lives change completely.
| Title | Time | |
|---|---|---|
| 1 | The Head Hunter | 2021-03-03 |
| 2 | Eye for an Eye | 2021-03-04 |
| 3 | Resurfacing Murder Cases | 2021-03-10 |
| 4 | Who Are You? | 2021-03-11 |
| 5 | The Live Broadcast | 2021-03-17 |
| 6 | The Donkey and the Goat | 2021-03-18 |
| 7 | Memory Loss | 2021-03-24 |
| 8 | Ba-reum's Memories | 2021-03-25 |
| 9 | Ba-reum's Brain | 2021-03-31 |
| 10 | Sung Yo-han in Me | 2021-04-01 |
| 11 | Kill Him! Kill Her! | 2021-04-08 |
| 12 | The Yo-han in Ba-reum | 2021-04-14 |
| 13 | DNA on the Weapon | 2021-04-15 |
| 14 | The Cat Killer | 2021-04-21 |
| 15 | It Was All Me! | 2021-04-22 |
| 16 | Was It Really Sung Yo-han? | 2021-05-05 |
| 17 | The Guryeong Family Massacre | 2021-05-06 |
| 18 | Please, Give Me Some Time | 2021-05-12 |
| 19 | Kim Joon-sung's Laptop | 2021-05-13 |
| 20 | Ba-reum's Final Call | 2021-05-19 |
