A girl who lost her father to a serial killer, a detective and a killer are intertwined in a chaotic relationship and are met with an unprecedented series of events.
| Actor | Role |
|---|---|
 Shim Eun-kyungHee-ju | Hee-ju |
 Kim Seung-ohKi-bum | Ki-bum |
 Yoon Je-moonDae-young | Dae-young |
 Oh Tae-kyungMin-su | Min-su |
 Jung Hae-kyunDetective Yu | Detective Yu |
 Ahn Jae-hongDetective Cha | Detective Cha |
 Kim Won-haeChief Ban | Chief Ban |
 Jung Chan-hoonManager Nam | Manager Nam |
| LLee Gap-seonDetective Lee | Detective Lee |
| EEun Ji-hyeCall Girl | Call Girl |
 Joo Boo-jinDae-young's Mother | Dae-young's Mother |
 Ahn Se-hoPC Cafe | PC Cafe |
 Oh Jae-kyunJudge | Judge |
 Kim Seo-raHee-ju's Mother | Hee-ju's Mother |
 Ji Dae-hanHee-ju's Stepfather | Hee-ju's Stepfather |
 Kim Hong-paChief Police | Chief Police |
 Yoon HwanSquad Team 2 Detective 4 | Squad Team 2 Detective 4 |
 Kim Eun-wooDetective | Detective |
 Jang Jun-hyeonDetective | Detective |
 Kim Dong-hyeokViolent Crimes Team 1 Detective 2 | Violent Crimes Team 1 Detective 2 |
 Jeong Jin-hyeokViolent Crimes Squad 1 Detective 3 | Violent Crimes Squad 1 Detective 3 |
| KKwon Hong-sukJudge | Judge |