A detective and a serial killer share a cellular connection through a killer's donor organs – how will this shape their fates?
| Actor | Role |
|---|---|
 Jo Han-sunSeon-du | Seon-du |
 Jeong Jin-woonKyu-jong | Kyu-jong |
 Noh SusannaAh-seung | Ah-seung |
 Jeong Tae-wooNot listed | Not listed |
 Park Soon-cheonNot listed | Not listed |
 Jung In-giNot listed | Not listed |
 Lee Ji-wonNot listed | Not listed |
 손동제Not listed | Not listed |