Inspector Koo Cast
7 actors in all seasons
Lee Young-ae
Koo Kyung-yi
Kim Hye-jun
Song Yi-kyung / "K"
Kim Hae-sook
Director Yong
Kwak Sun-young
Na Je-hui
Baek Sung-chul
Santa
Cho Hyun-chul
Oh Gyeong-su
Lee Hong-nae
An Geon-uk