On the latest episode of the tvN drama "Criminal Minds", the criminal who kidnapped a teenager, imprisoned her, and forced her to kill her friend was caught.
The criminal was her swim friend's father and he'd done those atrocious things to her because his daughter's leg had been hurt by Hae-in's father, ending her swimming career. The criminal wanted revenge for his daughter.
After solving the case, Hyeon-joon (Lee Joon-gi), Seon-woo (Moon Chae-won) and Min-yeong (Lee Sun-bin) had a surprise birthday party for Nana Hwang (Yoo Sun). Another case interrupted the festivities and the criminal with an obsession left a signature mark: stabbing his victim and breaking the handle of the weapon.