In the 2008 film *The Chaser*, secrets are the primary currency of the plot, driving the tension as the protagonist and the authorities race to uncover information that the antagonist has meticulously hidden.
The characters are keeping the following specific secrets:
### **1. Jeon Yeong-min (The Serial Killer)**
Yeong-min is the "black box" of the film, and his secrets are the most depraved:
* **The Mutilation of his Nephew:** While the police initially view him as a simple criminal, Joong-ho discovers a dark secret from Yeong-min’s past: he was previously imprisoned for three years for "lobotomizing" his infant nephew. He left the child with permanent brain damage by striking him in the head, a precursor to the hammer-and-chisel signature of his later murders.
* **His Impotence:** This is a deeply guarded physiological secret that serves as his primary motive. Because he is sexually impotent, he expresses his power and frustration through extreme violence against women. When a police psychiatrist correctly identifies this secret during interrogation, it is the only time Yeong-min loses his calm, detached composure and reacts with explosive rage.
* **The Stolen Identity of the House:** Yeong-min does not own the house where he commits his crimes. He secretly murdered the rightful owner, an architect and sculptor named Mr. Park, along with the owner's dog. He lives there as an "assistant" to hide his presence while burying his victims in the courtyard.
* **Religious Imagery as a Map:** Yeong-min keeps a secret room filled with grim, religious drawings. Joong-ho eventually realizes these aren't just art; they match a specific statue at a local church, which is the "secret" landmark that leads Joong-ho to the killer's hidden lair.
### **2. Eom Joong-ho (The Ex-Cop Pimp)**
Joong-ho’s secrets are rooted in his fall from grace and his initial lack of morality:
* **His Corrupt Past:** It is revealed that Joong-ho was a detective who was discharged for accepting bribes. He uses his former "badge" and police connections to bypass legal hurdles, keeping his true history as a "dirty cop" a point of friction between him and his former colleagues.
* **Initial Motive:** For much of the first act, Joong-ho hides the fact that he doesn't actually care about the safety of the missing women. He believes they have been "poached" or sold by a rival pimp and is only trying to recover his "financial assets."
* **The "Bait" Secret:** Joong-ho keeps the secret from the police (and initially from himself) that he effectively sent Mi-jin to her death. He knew the customer (4885) was suspicious but forced her to go anyway so she could text him the address.
### **3. Kim Mi-jin (The Victim)**
* **The Existence of Her Daughter:** Mi-jin keeps her daughter, Eun-ji, a secret from her employer, Joong-ho, and her life as a prostitute. She tries to keep her two worlds entirely separate to protect the child. It is only after she goes missing that Joong-ho discovers the girl alone in Mi-jin's apartment, which triggers his transition from a greedy pimp to a desperate protector.
### **4. The Police and Bureaucracy**
The film portrays the South Korean police force as a machine built on secrets and face-saving:
* **The Mayor’s "Feces Attack":** The police are secretly preoccupied with a public relations disaster involving the Mayor of Seoul, who was attacked with feces while under their protection. This embarrassment causes them to prioritize catching the "poop thrower" over a serial killer to save political face.
* **Administrative Secrecy:** The police and prosecutors keep Yeong-min’s impending release a secret from Joong-ho. They are more concerned with the "secret" of their own procedural incompetence—fearing public outcry if they hold a man without evidence—than they are with the fact that he has already confessed to the murders.
### **5. The "Prison Mate"**
* **The Tool Bag:** A minor character, Yeong-min’s former cellmate, is briefly seen living in the house. He keeps the secret of Yeong-min’s "work tools" (the hammer and chisel) out of fear. He knows Yeong-min is dangerous but stays silent until Joong-ho physically forces the truth out of him.