Netflix has released fresh stills from its upcoming Korean thriller series Mousetrap, giving viewers a closer look at the high-stakes pursuit of a mysterious man known only as “The Rat.” The new images show Ryu Jun Yeol, Sul Kyung Gu, and Lee Kyu Hyung caught in a tense chase where nothing is what it seems.
The series tells the story of a writer who loses everything—his name, his money, and his identity—to a shadowy figure. To get his life back, he must join forces with a loan shark who once hunted him down. The newly released stills offer a first look at how these three characters become tangled in a dangerous game of deception.
A Writer Who Loses His Own Identity
Ryu Jun Yeol takes on the role of Moon Jae, a novelist who lives alone and keeps to himself. He has spent years isolated from the outside world, using a pen name and following a quiet daily routine. But his peaceful life shatters when strange things start happening. His fingerprint no longer unlocks his phone. His passwords stop working. One by one, the things that prove who he is slip away from him.
A person calling himself “The Rat” has taken over Moon Jae’s identity, draining his bank accounts and leaving him with no way to prove he is the real Moon Jae. The stills capture Moon Jae’s confusion and fear as he realizes his entire life has been stolen. For a man who has lived in isolation for years, stepping out into the world to chase a ghost becomes a terrifying journey.
An Unlikely Alliance With a Loan Shark
Sul Kyung Gu plays Noja, a tough loan shark who is determined to get his money back. When he gets pulled into Moon Jae’s strange situation, he finds himself working alongside the very man he once pursued. The stills show Noja holding an iron bar while chasing someone, hinting at his relentless and dangerous approach to getting what he wants.
Director Kim Hong Sun praised Sul Kyung Gu for his performance, saying he is “an actor with outstanding acting skills who is perfectly suited for the character of Noja”. Noja’s raw energy and determination add a layer of tension to the series, as he will stop at nothing to recover his lost money.
A Detective on the Hunt
Lee Kyu Hyung joins the cast as Sun Yong, a detective investigating the case. The stills show him examining documents with a suspicious look on his face, teasing the arrival of a mysterious document that could change everything. In another image, his determined expression hints at how far he will go to uncover the truth behind Moon Jae’s stolen identity.
With three men all chasing the same elusive figure, the series builds toward a confrontation where reality and deception blur together. The pursuit brings out hidden truths that none of them expect.
Based on a Popular Webtoon and Korean Folklore
Mousetrap is adapted from the webtoon “Field Mouse” by Ludvico. The story takes inspiration from an old Korean folktale where a rat that eats someone’s clipped fingernails turns into that person. This eerie premise sets the stage for a thriller where identity becomes the most dangerous weapon.
The series is directed by Kim Hong-sun, known for his work on Dear Hongrang and Money Heist: Korea – Joint Economic Area. The script comes from writer Lee Jae-gon, who previously worked on A Model Family.
New Stills Show the Tension Building
The recently released stills give fans a clear picture of the tense atmosphere waiting in Mousetrap. Moon Jae looks lost and confused, a man who has had his entire world taken from him. Noja commands attention with his fierce presence, ready to do whatever it takes to get his money back. Detective Sun Yong studies clues with sharp focus, determined to solve the case.
These images build excitement for a series that promises to keep viewers guessing. The question of who “The Rat” really is, and how he managed to steal someone’s entire identity, lies at the heart of the mystery.
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Premieres on Netflix This Month
Mousetrap is set to premiere on August 28, 2026, exclusively on Netflix. The series will be available to stream globally, bringing this Korean thriller to audiences around the world.
With a strong cast led by Ryu Jun Yeol, Sul Kyung Gu, and Lee Kyu Hyung, the drama is already generating attention as one of the most anticipated thrillers of the year. The combination of a gripping premise, talented actors, and a director known for genre storytelling makes Mousetrap a must-watch for fans of mystery and suspense.
The series joins Netflix’s growing lineup of Korean originals, adding another layer of excitement for K-drama fans waiting for the August release.
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