Last time, Inspector Ryoo learned that he has some sort of connection to the mysterious online personality that may have masterminded Yeong-joo's murder of her father and then her subsequent suicide. Inspector Ryoo also unlocked a memory suggesting he might have murdered his own father. But "Bad and Crazy" takes an intriguing approach to these shocking events by asking an important question- how does Inspector Ryoo know these memories are real?, Bad and Crazy, Cha Hak-yeon, Han Ji-eun, Kang Ae-shim, Kim Dae-gon, Kim Sae-bom, Lee Dong-wook, Wi Ha-joon, Yoo Seon-dong