‘Mousetrap’ Review: A Gripping Exploration of Identity Theft and Paranoia

Netflix’s latest Korean thriller immerses viewers in a chilling nightmare set in 2026, where your fingerprint, name, and entire digital identity can vanish overnight. ‘Mousetrap’ centers on Moon Jae, a reclusive novelist portrayed by Ryu Jun-yeol, who finds himself locked out of his phone and apartment, with his identity seemingly usurped by someone else. The show’s premise, inspired by an old Korean folk tale about a rodent that becomes human by consuming human fingernails, provides a mythic foundation that resonates with contemporary anxieties.

Ryu excels in portraying characters whose calm demeanor gradually unravels, and Moon Jae is arguably his most vulnerable role to date—a man defined by routine and solitude who suddenly loses everything he once relied on. Opposite him, Sul Kyung-gu plays No Ja, a loan shark turned reluctant ally, creating a compelling dynamic rooted in mutual distrust rather than easy camaraderie. A police detective also hovers on the periphery, adding a procedural element that occasionally intersects with the identity theft narrative in intriguing ways.

What struck me most while watching ‘Mousetrap’ is how effectively it transforms bureaucratic horror into something visceral. The notion of being erased from your own life, unable to prove your identity, taps into a genuine modern fear surrounding data, surveillance, and the fragility of our self-perception in a world mediated by screens and systems. The show amplifies this dread with moody lighting, a tense score, and a color palette that feels perpetually dreary, creating an atmosphere that captivates viewers from the start.

However, ‘Mousetrap’ does stumble with its pacing. The series takes its time revealing information, leading to moments in the middle episodes where I found myself checking the time rather than being fully engaged. With a ten-episode structure, maintaining momentum is crucial, yet the show sometimes confuses withholding information with building tension, revisiting the same themes of paranoia without advancing the plot meaningfully. The mystery of the Rat remains captivating, but the journey to each revelation can feel drawn out.

The performances are a significant strength, making the slower moments more tolerable. Ryu’s portrayal of desperation is nuanced, while Sul brings a weary menace to No Ja, keeping viewers guessing about his true intentions well into the later episodes. The supporting cast, including a standout performance from an actor playing a shadowy tech figure involved in the identity scheme, adds depth even when the writing limits their development.

I also appreciated that the show avoids transforming its central metaphor into a purely supernatural tale. Rather than a monster story cloaked in folklore, it serves as a psychological thriller that uses rat mythology to explore how technology can easily hijack our identities. This restraint enhances the show’s longevity compared to a more overtly flashy approach.

By the end of the season, ‘Mousetrap’ presents a narrative that is more intriguing than fully satisfying—a series that excels in atmosphere and performances but struggles with pacing. I was left impressed by the ambition and craftsmanship on display, even as I wished for a tighter middle section. My final verdict is 7 out of 10, a genuinely eerie premise elevated by strong lead performances, yet hindered by a runtime that doesn’t always justify its pacing.

Have you finished ‘Mousetrap’ yet, and did the ending meet your expectations? Share your thoughts in the comments and let me know if you would rate it higher or lower than I did.