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
Sieun
Jin Sun Mi
Heo Jung-min
Choi Gi Chan
Kim Myung-soo
Kang Suk
Uhm Hyun-kyung
Song Soo Ji
Choi Shang
Teacher Ma
Maid Escort
Code of a Killer
Fen Jie Xian
Romance of a Twin Flower
Five Daughters
Klangor
Borderless
Dream of 400 Years
Devil Vissons
Illusion
My Charming Villainous Emperor
Un soupçon
Stand by Me
Medical Investigation
The Adventures of Shirley Holmes
Answer for Heaven
Absolute Zero
Back for You
The Leaking Bookstore
The Formless City
