Detective Mr. Gong

Lee Moon-sik

as

Gong Pil-du

Kim Yu-mi

as

Min-ju

Park Jeong-hak

as

Man-su

Lee Kwang-ho

as

Yong-bae

Choi Yeo-jin

as

Delivery girl

Byun Hee-bong

as

Pil-du's dad

Kim Kap-soo

as

Chief Jo

Kim Soo-mi

as

Mrs. Kwon

Kim Soo-ro

as

Tae-gon

Kim Roi-ha

as

Mr. Cheon

Kim Sang-ho

as

Detective Ji

Lee Cheol-min

as

Jae-gu

Yoo Tae-woong

as

Detective Kang