Joong Yeop recovers from his injuries and immediately wants to go stop Hyo Kyung. Jae Hwan goes to the broadcasting station to find Hyo Kyung, but he hears that she has already resigned from her position. Jae Hwan continues to track Hyo Kyung down, but when they finally come face-to-face, she already seems to have an ending in mind.

Jae Hwan finds out that the bullet found at Joong Yeop's crime scene was one that police officers were not issued to fire. Later, after watching an unsettling recorded video of his mother's interrogation, Jae Hwan rushes off to see his mother, who is now under supervision. Meanwhile, Kim Hyo Kyung appears on an internet show and reveals new facts about the Chimera Killer.

Hyo Kyung calms Joong Yeop at Jae Hwan's house, and she learns about the whole truth behind the Chimera Case that happened in the past. Later, when Hyo Kyung meets Joong Yeop outside Jae Hwan's house, she notices a tail. She leads them right to Joong Yeop. As Jae Hwan rushes to help him, a bullet strikes Joong Yeop.

While being taken by the questionable investigators from the prosecution, Joong Yeop takes control of the situation and flees the scene. The police start to chase him down, but Joong Yeop sneaks a secret message to Eugene. She goes to the place Joong Yeop indicates in his coded message with Jae Hwan. When they meet, Jae Hwan ends up pointing his gun at Joong Yeop.

Joong Yeop claims that he assaulted people. He turns himself in at the police station, and a suspicious package is delivered to Chief Bae’s office. Meanwhile, the prosecution shows up and takes Joong Yeop to a remote mountain, even causing a car crash on purpose. They make him walk deeper into the woods at gunpoint until they arrive at a cliff.

Joong Yeop tells Jae Hwan that his mom’s memories from before the accident are coming back. He has suspicions about the fact that the accident occurred 35 years ago. Later on, Jae Hwan gets a phone call on the day of his mom’s next appointment. He finds out that Joong Yeop quit his job at the hospital and left the country.

Kang Sang Gu is taken in as a strong suspect of the Chimera Murders. Right before when Seo Hyun Tae could have been in grave danger, solid evidence is found at Sang Gu’s home, and he confesses to all the murders he committed as the Chimera. Something however, tells Jae Hwan that the case is not over yet. His gut feeling keeps alerting him that the true Chimera might still be at large.

Jae Hwan asks Chief Bae why Hahm Yong Bok got discharged 35 years ago, but Chief Bae becomes defensive and doesn't give him an answer. Meanwhile, Agent Hathaway finds suspicious things about Kang Sang Gu and keeps a close eye on him. However, Kang Sang Gu also has his eyes on her.