Mousetrap – Details
Title: Mousetrap
Platform: Netflix
Premiere Date: August 28, 2026
Genre: Crime / Thriller / Mystery
Creators: Kim Hong-sun, Lee Jae-gon
Episodes: 10
Cast: Ryu Jun-yeol, Sul Kyung-gu, Lee Kyoo-hyung
Netflix is getting ready to unleash a dark new Korean thriller with Mousetrap, an eight-episode? series built around stolen identities, dangerous criminals and an unlikely partnership between a reclusive writer and a ruthless loan shark.
The series stars Ryu Jun-yeol, Sul Kyung-gu and Lee Kyoo-hyung and promises a tense mystery surrounding a mysterious figure known only as “The Rat.”
Mousetrap premieres August 28, exclusively on Netflix.

Plot
Mousetrap follows Moon-jae, a reclusive writer whose quiet existence is shattered when he discovers that someone has stolen his identity.
Suddenly, his life no longer belongs to him.
Determined to uncover who is responsible and reclaim what has been taken from him, Moon-jae finds himself entering a dangerous world of criminals, deception and violence.
His search leads him to an unlikely ally: No-ja, a ruthless loan shark who has his own reasons for getting involved.
Together, the pair must track down a mysterious individual known as “The Rat.”
But the deeper Moon-jae gets into the mystery, the more difficult it becomes to determine who can actually be trusted. What begins as an attempt to recover his stolen identity develops into a much more dangerous confrontation involving hidden motives and potentially devastating consequences.
Mousetrap
- Director: Kim Hong-sun
- Starring: Ryu Jun-yeol, Sul Kyung-gu, Lee Kyoo-hyung
- Genre: Mystery, Crime, Drama
Data provided by The MovieDB
Who Is The Rat?
At the center of the mystery is the mysterious figure known simply as “The Rat.”
Little is revealed about the character in the initial premise, which makes the identity thief an intriguing part of the series’ central mystery.
Rather than simply being someone who has stolen Moon-jae’s identity, The Rat appears to represent a much larger threat—one that forces Moon-jae into an unfamiliar criminal underworld.
As Moon-jae and No-ja attempt to uncover the truth, audiences will be left wondering just how far The Rat’s influence extends.



Cast
The Mousetrap cast includes:
- Ryu Jun-yeol as Moon-jae
- Sul Kyung-gu as No-ja
- Lee Kyoo-hyung
Ryu Jun-yeol leads the series as Moon-jae, the isolated writer suddenly forced to fight for control of his own identity.
Sul Kyung-gu plays No-ja, the dangerous loan shark who becomes Moon-jae’s unlikely partner.
Lee Kyoo-hyung also stars in the series, with the three actors forming the central cast of the Korean thriller.
Creators
Kim Hong-sun and Lee Jae-gon serve as creators of Mousetrap.
Kim Hong-sun is known for his work in Korean crime and thriller storytelling, making the combination of crime, mystery and psychological tension in Mousetrap particularly intriguing.
The series uses its stolen-identity premise to explore a world where appearances can be deceiving and even the people closest to the mystery may have something to hide.
A Korean Thriller About Identity
The idea of having your identity stolen is already unsettling, but Mousetrap takes that concept into much darker territory.
Moon-ja isn’t simply dealing with financial or bureaucratic problems. Someone has effectively stepped into his life, leaving him with the frightening realization that he may no longer have control over his own existence.
His decision to team up with a loan shark only makes matters more complicated.
The contrast between Moon-ja’s isolated writer and No-ja’s criminal background should provide much of the series’ dramatic tension, particularly as the two are forced to work together despite having very different motivations.
What Can Viewers Expect From Mousetrap?
Based on its premise and trailer, Mousetrap looks set to combine several elements of Korean genre television, including:
- Crime and mystery
- Psychological suspense
- Identity theft
- Criminal conspiracies
- Violence and revenge
- Unlikely alliances
- A central mystery surrounding “The Rat”
The series also has the advantage of being structured as a 10-episode Netflix series, giving the mystery plenty of room to develop and potentially reveal new layers as Moon-ja gets closer to the truth.
Release Date
Mousetrap premieres August 28, 2026, exclusively on Netflix.

