A children's mystery drama about four kid detectives solving various cases happening at school.
Kim Ji-min
Kang Ha Ra
Tang Joon-sang
Lee Seo Jin
Yoon Chan-young
Lee Woo Jin
Yoo Jun
Choi Dong Yeong
Park Si-eun
Jin Sun Mi
Heo Jung-min
Choi Gi Chan
Kim Myung-soo
Kang Suk
Uhm Hyun-kyung
Song Soo Ji
Choi Shang
Teacher Ma
1958 · Series
2013 · Series
1957 · Series
1984 · Series
2022 · Series
1977 · Series
2015 · Series
2020 · Series
2024 · Series
1975 · Series
2017 · Series
1989 · Series
2025 · Series
1973 · Series
2004 · Series
1992 · Series