Je Moon-jae, a reclusive novelist who becomes desperate after a mysterious figure known as "The Rat" steals his identity and financial assets. To reclaim his life, he forms an unlikely alliance with Noja, a loan shark-turned-private investigator, leading them into a tense manhunt to uncover the truth behind the identity theft and the dark conspiracy hidden beneath it.
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Community reviews for Mousetrap, shown here with its season details.
*Mousetrap* (2026) relies on strong, gritty performances and a moody, atmospheric start, earning a solid 6/10 for its sheer style and tension. Unfortunately, its bloated ten-episode runtime bogs down in a muddy middle stretch, dragging the experience into a frustratingly confusing maze of overcomplicated twists and narrative whiplash that leaves the final payoff feeling exhausted.
Episode 1
While hiding from society, a reclusive genius novelist Je Moon-jae falls victim to identity theft — only to be confronted by his doppelganger.
Episode 2
Noja uncovers the world of identity laundering after Moon-jae escapes his grip. Meanwhile, Detective Park Sun-yong pieces together the link between them.
Episode 3
Suspicious but intrigued, Noja takes Moon-jae on as both a client and a hostage. Their uneasy alliance leads them to setting up a carefully planned trap.
Episode 4
Moon-jae suspects The Rat may be a figure from his past. Following his newly recovered memory, he and Noja head to the island where the man once stayed.
Episode 5
A shocking tie surfaces between Noja and The Rat, while Sun-yong closes in on crucial evidence. Later, The Rat appears publicly, cornering Moon-jae.
Episode 6
Moon-jae reaches out to his longtime editor, hoping she can vouch for him. Lost in confusion, a text from Noja becomes his only lifeline.
Episode 7
After barely escaping, Moon-jae joins a frantic race for someone who can reveal his identity. Later, Sun-yong discovers a shocking truth about his past.
Episode 8
Moon-jae sinks deeper into trouble. Sun-yong heads to a nursing home for answers — only to find his witness gone. Later, Noja's past buries him alive.
Episode 9
Moon-jae evades police to meet The Rat where it all began. Noja leaves him with heartfelt advice as Sun-yong continues to pursue a key witness.
Episode 10
Moon-jae stands at the center of a trap a lifetime in the making. Every lie and stolen identity surfaces as he questions: Is he the predator or the prey?