Jeong In-gi
Cha Do-hyeok (20 eps)
Jo Min-jun
Lee Hyung-nyeon (20 eps)
Yoon Sang-hyun
Ha Moo Yum (20 eps)
Kim Min-jung
Maria Oh (20 eps)
Sung Dong-il
Yang Cheol-gon (20 eps)
Lee Joon
Ryu Tae-oh (20 eps)
Kim Ji-won
Ma Ji-wool (20 eps)
Kang Nam-gil
Han Sang-hoon (20 eps)
Min Sung-wook
Nam Ki Ri (20 eps)
Yoon Kyun-sang
Youngest detective (20 eps)
Choo Soo-hyun
Oh Young-ae (20 eps)
Yoon Chan-young
young Ryu Tae-oh (20 eps)
Hyun Woo
young Cha Do-hyeok (20 eps)
Jeong Jae Min
Ha Moo Yum [Young] (20 eps)
Ha Jun
Nah Do-Hyung (20 eps)
