Mouse_
Original: 마우스
"The most heinous psychopath. the most evil predator ever. the truth of the unsolved case."
A psychopath's ruthless serial murders have left the entire nation gripped with fear and chaos. A honest and justice-seeking rookie police officer and a veteran detective with tragic past, face against the killer. After the encounter with the psychopath, their lives totally change.
Network
tvN
Episodes
20
Updated Feb 16, 2026
WHERE TO WATCH
Prime Video
FREE
26 countries
Viki
FREE
3 countries
Tubi
FREE
2 countries
The Roku Channel
FREE
1 country
DROPTHE_ GOSSIP
Overview
Mouse has 1 season with 20 episodes spanning 2021.
Lee Seung-gi →
Rating
With a 8.4/10 rating from 305 votes, Mouse is considered highly rated.
Year context
Mouse first aired 5 years ago in 2021.
CAST (8)
SEASONS (1 season, 20 episodes)
SEASON 1
01
The Head Hunter
Terrifying news of an unsolved serial killing case strikes the country, putting everyone in fear. One day, a family of four visits a camp site…
02
Eye for an Eye
Moo Chi visits the Head Hunter at the prison and tells him that he’ll not only kill the Head Hunter but find his son and…
03
Resurfacing Murder Cases
Chi Kook has been found at the prison with multiple stab marks all over his body along with a message written in blood. Not long…
04
Who Are You?
After Bong Yi’s grandmother is murdered and a mysterious finger is found at a church, Moo Chi and his team start investigating more thoroughly. Moo…
05
The Live Broadcast
An hour-long live broadcast goes on air in hopes to save Han Kook. But Ba Reum sets off to a discreet journey as the rest…
06
The Donkey and the Goat
After Moo Won is brutally murdered, Moo Chi gives up on everything and only keeps drinking. While Han Kook is still missing and his life…
07
Memory Loss
After getting a gunshot wound, Yo Han is in critical condition. Ba Reum gets brain surgery. But after receiving the brain surgery, he suffers from…
08
Ba-reum's Memories
Ba Reum’s instinctive intuition helps Moo Chi get closer to the bottom of the mystery behind the knots. But he suffers from the random flashbacks…
09
Ba-reum's Brain
Ba Reum finds out about a shocking story behind his brain surgery a year ago. He’s tormented by unwanted memories that keep haunting him. Detective…
10
Sung Yo-han in Me
Ba Reum finds himself acting a lot more violent than before and realizes that it’s getting harder to control himself. He even gets the urge…
11
Kill Him! Kill Her!
Ba Reum keeps hearing Yo Han’s voice in his head telling him to kill people. The hallucination eventually made him murder Woo Hyung Chul. When…
12
The Yo-han in Ba-reum
After killing Kang Duk Soo, Ba Reum keeps a close eye on how the investigation rolls out. He tries to keep a foot ahead so…
13
DNA on the Weapon
The DNA result found on the weapon that was used to kill Kang Duk Soo confuses Moo Chi. Bong Yi joins Hong Ju’s team and…
14
The Cat Killer
Ko Nam, a bright and insightful kid finds out about a cat killer around his neighborhood. One day, he promises to share his personal investigation…
15
It Was All Me!
Ba Reum starts to remember everything and is filled with guilt. When Ba Reum sees Han Kook’s mother desperately looking for her child even after…
16
Was It Really Sung Yo-han?
Chi Kook’s sudden death shocks everyone and Ba Reum tries to convince Chi Kook’s mom in requesting an autopsy. Meanwhile, Detective Ko starts to doubt…
17
The Guryeong Family Massacre
Ba Reum finally remembers what exactly happened to his family. He tries to set a trap to catch the mysterious OZ, and he finds out…
18
Please, Give Me Some Time
Moo Chi finds out that Ba Reum was the killer and ferociously charges after him at the station. Moo Chi also suspects Detective Lee being…
19
Kim Joon-sung's Laptop
Moo Chi and Bong Yi get closer to the truth. In the meantime, Ba Reum tries to find his aunt, the last missing puzzle piece.…
20
Ba-reum's Final Call
Ba Reum makes the final decision to turn himself in and finish one last mission that only he can do. Hong Ju also shares her…
SERIES INFO
1
Seasons
20
Episodes
76 min/ep
Per Episode
Ended
Status
NETWORKS (1)
tvN
DETAILS
First Aired
Last Aired
Status
Ended
Seasons
1
Episodes
20
Episode Length
76 min/ep
Language
Korean
Country
Rating
8.4/10 (305 votes)
Popularity
9
IMDB
FREQUENTLY ASKED QUESTIONS
What is Mouse about?
A psychopath's ruthless serial murders have left the entire nation gripped with fear and chaos. A honest and justice-seeking rookie police officer and a veteran detective with tragic past, face against the killer. After the encounter with the psychopath, their lives totally change.
Where can I watch Mouse?
Mouse is available on Prime Video, Viki, Tubi, The Roku Channel. Availability varies by region.
How many seasons does Mouse have?
Mouse has 1 season with 20 episodes total.
Who stars in Mouse?
The cast of Mouse includes Lee Seung-gi, Lee Hee-jun, Park Ju-hyun, Kwon Hwa-woon, Gyeong Su-jin.
What is the rating of Mouse?
Mouse has a rating of 8.4 out of 10 based on 305 votes on TMDB.
Is Mouse still running?
Mouse has ended. The final episode aired on .
GENRES (3)
Crime
Mystery
Sci-Fi & Fantasy
