Further Investigation (2020)

Moo Young is on the verge of losing her show, so she makes a deal with the chief to increase the ratings. She decides to dig the unsolved case which is strangely connected to the recent… read more

Jin Gang Ho gets suspended right before he catches the culprit. After arresting the suspect, Gang Ho fails to obtain the decisive evidence and must let the culprit go. He gets suspended… read more

A notorious serial murderer and a gangster escape! As soon as Jang Min Gi, a serial murderer who killed four people viciously escapes, the Butterfly Serial Murders begin to happen… read more

A former gang member is murdered by a serial killer. Another butterfly murder occurs, and Gang Ho insists that Jang Min Gi is not the real killer of this case, but he gets kicked out… read more

The police declare the real culprit and calm public anger. But Kang Ho and Moo Young don't stop. (Source: Apple TV)

A boy is found dead after 10 years in a manhole. Ban Seok falls into a panic as Ka Eun disappears. (Source: Apple TV)

Ban Seok finds Ka Eun's bracelet on the body discovered in a mountain. He asks Kang Ho for help. (Source: Apple TV)

Ka Eun becomes the murder suspect of her boyfriend. And the children caught confess she killed him. (Source: Apple TV)

A medical student is found murdered at home. Moo Young finds its connection to another cold case. (Source: Apple TV)

Moo Young decides to accept the deal. Failing to arrest him, Kang Ho goes to find the only survivor. (Source: Apple TV)

The survivor is found inside the trash pile. And Moo Young exposes information learned from Ki Tae. (Source: Apple TV)

Despite Team Bulldog's hard work, the commissioner dismisses Kang Ho. The team jumps into the trap. (Source: Apple TV)