Im Cheol-hyung

Ten years after discovering her murdered uncle, Ena and Detective Hansaem must cooperate to stop a series of similar murders - each linked by strange puzzle pieces.

Two ill-fated men become a comic duo to investigate criminal cases involving a rare brain disease together.

Han Ji-hyuk, an NIS agent gone MIA, returns after one year to join a new team as he searches for his lost past.

Kim Seo-Jin is a man who is driven only to achieve success in his life. Thanks to his efforts, he is the youngest executive at his company. His life is perfect, with his beautiful violinist wife Kang Hyun-Chae and a daughter. His wonderful life comes to a halt when his young daughter is kidnapped. He falls deep into despair. To change the past, when his daughter was kidnapped, he contacts Han Ae-Ri approximately one month in the past. Han Ae-Ri has busy days with her studies and working a part-time job to make enough money to pay for her sick mother's operation. One day, her mother suddenly goes missing. Han Ae-Ri falls into despair, when Kim Seo-Jin from the future contacts her.

A crime action investigation drama about police investigator Jin Kang Ho from the serious crime squad who never gives up on a case until he gets to the end of it. He will solve unsolved cases with a team consisting of a passionate producing director (PD) of an investigative show with low viewership ratings, a detective who used to be a profiler, a bar CEO who puts his violent past behind, and a funeral director who used to be a well-esteemed autopsy doctor at the National Forensic Service (NIS).

Hiding a twisted past, a man maintains his facade as the perfect husband to his detective wife — until she begins investigating a series of murders.