Song Kang-ho

Sang-hyun

Gang Dong-won

Dong-soo

Bae Doona

Su-jin

IU

So-young

Lee Joo-young

Detective Lee

Lim Seung-soo

Hae-jin

Park Ji-yong

Woo-sung

Kim Sun-young

Orphanage Director's Wife

Lee Mu-saeng

Seon-ho

Lee Dong-hwi

Mr. Song

Kim Sae-byuk

Mr. Song's Wife

Bek Hyun-jin

Detective Choi

Oh Hee-jun

Detective Choi's Subordinate

Ryu Kyung-soo

Tae-ho

Jong Ho

Young-gil

Sung Yoo-bin

Young-min

Park Kang-seop

Si-woo

Kim Keum-soon

Ms. Park

Kang Gil-woo

Mr. Im

Kim Yae-eun

Mr. Im's Wife