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Mousetrap's Identity Twist: Who Is The Real Rat?
1 Sep
Summary
- A novelist's identity is stolen by a mysterious figure known as The Rat.
- The writer's real name is Park Chan-u, who assumed his brother's identity.
- The protagonist is trapped by his own lies despite reclaiming his identity.

Netflix's "Mousetrap," released on August 28, 2026, concludes its ten-episode run, offering a complex explanation of its identity mystery.
The K-drama follows novelist Je Moon-jae, whose life implodes when his identity is stolen by a figure known as The Rat. Forced into an alliance with a loan shark, Moon-jae's situation is further complicated by a detective investigating the imposter.
The finale reveals the current imposter is Yu Min, but with a shocking turn: Moon-jae himself had stolen Yu Min's life years prior. The writer's true identity is Park Chan-u, who had assumed his older brother's name, detective Park Sun-yong, and attempted to erase his past.
Despite surviving the confrontation and legally regaining his identity, Moon-jae finds himself isolated and creatively paralyzed. A manuscript left by Yu Min details his crimes and Moon-jae's own plagiarism, exposing the hollowness of his success.
The final scene depicts Moon-jae's psychological torment, with Yu Min's face appearing as a manifestation of guilt. This ending solidifies the title's meaning: he is trapped in a self-made psychological mousetrap.
"Mousetrap" is a limited series, and as of the article's publication, no second season has been announced. Its narrative is considered complete within its ten episodes.