Son Ye-jin

Yoo Mi-ho / Lee Ji-ah

Han Suk-kyu

Han Dong-soo

고수

Kim Yo-han

이민정

Lee Si-yeong

Park Seong-woong

Cha Seung-jo

차화연

Seo Hae-yeong

정진

Park Tae-ho

Im Ji-kyu

Yak-tong

방중현

Jo Min-woo

손지나

Park Mi-yeon

주아름

Lee Ji-ah (young)

Soo-jung Ye

Aunt

Han Ye-won

Na-hyeon

Kim Ji-hyeon

Hong Yun-mi (uncredited)

Jo Kyung-sook

Yang Mi-sook (uncredited)

최진호

Kim Si-hoo (uncredited)

정인기

Kang Jae-doo (uncredited)

서동수

Crime lab investigation team leader (uncredited)