Mouse is a South Korean television series starring Lee Hee-joon, Lee Seung-gi, Park Ju-hyun, and Kyung Soo-jin. Directed by Choi Joon-bae and Kang Cheol-woo and written by Choi Ran, the story follows detective Go Mu-Chi (Lee Hee-joon) as he works alongside rookie officer Jeong Ba-reum (Lee Seung-gi) to hunt a serial killer. The series aired on tvN on Wednesdays and Thursdays from March 3 to May 20, 2021. imdb.com