: Despite finding evidence that seems to incriminate his brother, such as a missing earring in Sung-joon's car, he begins to suspect that Jung Man-chun might be innocent of the copycat murders.
In the fourth episode of the South Korean thriller (2022), titled "A Very Old Future," the narrative shifts from a standard procedural to a high-stakes psychological drama. The episode explores the themes of past trauma and systemic injustice through the following key developments: The Kidnapping of Ryu Sung-joon
The episode deepens the mystery surrounding Hope Welfare Center. It is revealed that characters like Ki-nam and Moon-kang are investigating the connection between recent murders and the facility. This backstory introduces a layer of societal commentary, suggesting that the current violence is a direct consequence of historical abuse and the "blindness" of the system that failed vulnerable children. Fragile Alliances and Suspicions

