‘Mousetrap’ Review: A Man Loses Everything Overnight, and Netflix Bets You’ll Stick Around to Watch Him Get It Back

There is a very specific kind of dread that comes from waking up and discovering the world no longer recognizes you, and Netflix’s new Korean thriller ‘Mousetrap’ opens right on that nerve. The ten episode series follows Je Moon-jae, a wealthy but painfully reclusive mystery novelist who has spent years building a life around routine, isolation and control inside his high rise Seoul apartment. When his phone stops responding to his fingerprint and his one trusted friend vanishes, Moon-jae realizes someone calling themselves The Rat has quietly stolen his entire identity.

The premise alone is enough to hook almost anyone, since the idea of losing your name, your money and your legal existence in a single morning taps into a very modern kind of anxiety. ‘Mousetrap’ is adapted from the webtoon Field Mouse and directed by Kim Hong-sun, a filmmaker with a track record for slick, propulsive genre work. That pedigree shows up early, with the first stretch of episodes moving with real purpose as Moon-jae’s world collapses around him.

Where the show earns its strongest reaction from me is in the performances, particularly Ryu Jun-yeol as Moon-jae. He plays the character’s anxiety and social discomfort with a rawness that makes the sudden loss of his controlled little world feel genuinely disorienting rather than just plot mechanics. Watching a man who has organized his entire existence around avoiding people get thrown headfirst into a criminal conspiracy gives the show an emotional hook that a lot of identity theft thrillers skip right past.

Sul Kyung-gu is just as vital as No-ja, a former enforcer turned reluctant investigator who initially shows up believing Moon-jae owes him money and has no interest in being gentle about collecting it. The friction between these two men, one paralyzed by fear and the other running purely on menace and pragmatism, gives ‘Mousetrap’ its most compelling scenes. Their forced partnership never feels like a lazy odd couple gimmick, it feels earned through genuine mutual desperation.

My issue with the series is one of momentum. ‘Mousetrap’ has the ingredients for a tightly wound, nerve shredding mystery, yet it keeps loosening its own grip by lingering on scenes and subplots long after they have made their point. There is a stretch in the middle episodes where the investigation practically stalls, circling the same suspicions and setbacks without pushing the central mystery forward in any meaningful way. For a show built on the terror of losing control over time, it is a little ironic how loosely it manages its own pacing.

The conspiracy at the center of the show, once it starts revealing itself, is genuinely clever, tangled in a way that rewards viewers who like piecing together a puzzle rather than being handed answers. I found myself replaying earlier scenes in my head trying to spot what I had missed, which is the mark of a mystery that respects its audience even when it is testing their patience elsewhere. It reminded me less of typical revenge thrillers and more of a bureaucratic nightmare dressed up as noir, where the villain’s real weapon is paperwork and systems rather than muscle.

Visually, the series leans into cold, sterile spaces, gleaming apartments and anonymous offices, that mirror Moon-jae’s own detachment from the world before everything falls apart. It is a smart choice that reinforces the show’s themes without ever feeling heavy handed. The supporting cast, including Lee Kyu-hyung as a detective circling the edges of the case, adds texture without pulling focus from the two leads.

By the time the season reaches its final stretch, ‘Mousetrap’ rediscovers its urgency and delivers a back half that mostly justifies the slower build. It does not fully erase the frustration of the sluggish middle section, but it left me satisfied rather than exhausted, which is not something every ten episode thriller manages to pull off. This is a show that trusts its actors and its central hook more than it trusts pure momentum, and for the most part that trust pays off.

Weighing the genuinely unsettling premise and two strong lead performances against a midsection that tests your patience more than it needs to, I am landing on a solid recommendation with reservations. My final verdict for ‘Mousetrap’ is 7.5 out of 10, a smart, well acted thriller that would have hit even harder with a tighter edit.

Did ‘Mousetrap’ pull you in or lose you somewhere in the middle, share your take in the comments below.