Flex X Cop

While filming a documentary, Isoo receives an anonymous threat: "Detective Jin. Let the game begin."

After a string of attacks, Isoo flees to a safe house. The bomber's final message: "FINAL ROUND."

Isoo and Hyera investigate a haunted house tip. They're attacked and wake up bound inside the house.

Five bodies are found in the abandoned house. Violent Crime Investigation Team 1 begins the hunt.

A concierge is found dead in a hotel room on White Day. Could this be a crime of passion?

While questioning the concierge's murder suspect, the hotel owner disappears. The team gives chase...

A magician dies in a fire onstage. Isoo and Hyera are stunned to meet a man with his exact face.

The boss of the Hammurabi gang emerges as a new suspect. Isoo devises a plan to confront him.

Hyera tells Isoo she's hunting a serial killer. A arts student is found dead in a bizarre state.

With the victim's three friends as suspects, Isoo works to decode the dying message.

Hyera finds Isoo at his house, covered in blood, next to a dead body. The evidence points to him.

A murder suspect is arrested, but another incident breaks out in the holding cell.

The Yu Seongwon case is reopened. Isoo recalls their first meeting and closes in on the truth.