South Korean crime television has told plenty of serial-murder stories, but Mouse pushes the format toward speculative territory rarely attempted in the genre. The 2021 series follows a manhunt that grows into something stranger the deeper its investigators dig.
What is Mouse about?
A rookie police officer with an unbending sense of justice is paired with a veteran detective still carrying the weight of an earlier, unresolved case. Together, reluctantly, they take on an inquiry into a string of killings that has left the public shaken and demanding answers. What starts as a conventional manhunt keeps expanding outward: leads point toward people and institutions the two men did not expect to be implicated, and the case forces both of them to weigh what they are willing to do, and to become, in order to stop the violence before it claims another victim. Later chapters push past standard procedural territory into speculative questions about whether a capacity for extreme violence can be identified before it is ever acted on, a premise that sets the show apart from more grounded crime dramas in the same catalogue.
About the cast
Lee Seung-gi and Lee Hee-jun lead an ensemble that also includes Park Ju-hyun, Kyung Soo-jin, Woo Ji-hyeon, Jo Jae-yoon and Kim Young-jae. Directors Choi Joon-bae and Kang Cheol-woo keep the visual language cold and controlled, favoring slow-building dread over the kinetic set pieces common to the genre, so the tension accumulates scene by scene rather than resolving in quick bursts.
Context & significance
Mouse belongs to a stretch of South Korean television willing to blend crime and mystery with outright science-fiction ideas rather than staying inside a single genre lane, and that hybrid approach shapes almost every turn the story takes. Episodes run short, which keeps the pacing brisk, but the plot is built cumulatively: details introduced early return, recontextualized, much later in the run, so the series rewards continuous viewing over a scattered one. Its willingness to ask uncomfortable questions about nature, upbringing and culpability, rather than simply chasing a culprit, is a large part of why it stood out among genre peers on its release.
Watching Mouse on Ktime
Mouse can be watched on K-Time once you sign in with a free account, and the platform's Farsi interface makes it straightforward for Persian-speaking viewers to find and queue South Korean thrillers like this one. This particular title has no Persian dub or subtitles yet, so it plays in its original Korean audio only, which is worth knowing before you start the first episode.