Lee Hyun, a Criminologist working for the New York Police, returns to Korea to investigate a recent email that he rec...

Plagued by insidious thoughts planted by serial killer Lee Joon-Yeong and recent events; Lee Hyun's father believes t...

Team 1 working with Lee Hyun come up with a profile of the victims. Cha Ji-An races to the next suspected victim and...

The murder suspect, Yang Seung-Hoon, leaves on the first available plane to China. Lee Hyun illegally uses Cha Ji-An...

Cha Ji-An is going stir crazy wanting to investigate so she joins up with Lee Hyun. They evade capture by hiding in ...

Lee Hyun meets with Prosecutor Shin Jang-Ho concerning Park Young-Chul's case. Jang-Ho informs Lee Hyun has experien...

Lee Hyun confronts Cha Ji-An about her doubting him and thinking he may be like Lee Joon-Yeong. Lee Hyun believes Lee...

Chi Ji-An is brutally attacked in her home and Attorney Jung comes to her rescue. Lee Hyun finds it suspicious and q...

The Planning Officer still refuses to open up to Lee Hyun concerning his past in regard to Joon-Young. Team 1 starts...

The serial killers, Do Jae-Shik and Kang Seong-Eun, capture Cha Ji-An and leave Team Leader Kang dying from a knife w...

Detective Jang’s missing notebook mysteriously appears at Lee Hyun’s home. Following the clues in the notebook, Ji-A...

Team 1 arrest Joo Yeong-Jae’s mother for abuse as she was a witness to the beating and did not interfere. Na Bong-Su...

Jo Yong-Woo attacks Lee Min in order to make Lee Hyun suffer. Cha Ji-An arrives in time to prevent Yong-Woo from kil...

Reeling from the discovery of her father’s remains, Cha Ji-An wants revenge but has to settle for seeking justice. L...

Lee Min catches Chai Ji-An ransacking Lee Jeong-Yeong’s special room but allows her to leave with some photos of chil...

Lee Hyun remembers his past of killing the murderer of his mom and the meaning behind Lee Min’s cards. Cha Ji-An tell...