1. Episode 1

Han Jung Woo befriends Lee Seo Yeon, the daughter of a murderer.

2. Episode 2

Han Jung Woo defends Lee Seo Yeon in front of their classmates.

3. Episode 3

Han Jung Woo and Lee Seo Yeon are kidnapped.

4. Episode 4

Detective Kim desperately search for traces of Lee Seo Yeon.

5. Episode 5

Nurse Jung is found dead in a swimming pool.

6. Episode 6

Han Jung Woo may have discovered Zoey's true identity.

7. Episode 7

Lee Seo Yeon's rapist is murdered.

8. Episode 8

New evidence shows that Sang Deung's killer was, in fact, a woman.

9. Episode 9

Lee Seo Yeon's mother sees Zoey at the police station.

10. Episode 10

Harry takes Zoey to have dinner with Han Tae Joon and his wife.

11. Episode 11

Zoey finds out that Han Jung Woo left his home when he was fifteen.

12. Episode 12

Jung Woo interrogates the cleaning lady on the murder of Kang Sang Deung.

13. Episode 13

Jung Woo digs deeper into the mystery of Harry's aunt's death.

14. Episode 14

Jung Woo discovered his kidnapping 14 years ago and the two recent murders are all connected.

15. Episode 15

Jung Woo gets himself fired to make sure his team gets to lead the current case.

16. Episode 16

Zoey finds out that the woman Jung Woo calls aunt and Harry's mother are the same person.

17. Episode 17

Zoey finds out that the woman Jung Woo calls aunt and Harry's mother are the same person.

18. Episode 18

Jung Woo and Lee Seo Yeon spent some time together after running away from the cops.

19. Episode 19

Jung Woo and his team finds evidence that Harry have also committed a crime in France.

21. Episode 21

It's the finale, Jung Woo must save Seon Yeon from Kang Hyung Joon's capture.