Sa rang eul Cheo bang hae Deu rim ni da

Se-Yeon Jin

Kong Ju A

Gi-woong Park

Yang Hyeon Bin

Kim Hyung-mook

Yang Dong-ik

Yoon Seo-Ah

Yang Eun Bin [Hyeon Bin's younger sister]

Kim Min-ah

O Jin A [Veteran nurse's assistant]

Yi-hyeon So

Cha Se Ri [Hyeon Bin's step-mother]

Kim Mi Sook

Na Seon Hae [Ju A's grandmother]

Seung-su Kim

Kong Jung Han [Ju A's father]

Sun-bin Kim

Kong U Jae [Ju A's younger brother]

Dae-chul Choi

Kong Dae Han [Ju A's uncle]

Hong Jin-gi

Jung Gi Beom [Police officer]

Jin-mo Joo

Yang Seon Chul [Hyeon Bin's grandfather]

Mi-ryeong Cho

Yang Dong Suk [Hyeon Bin's aunt]

Ho-jeong Yu

Han Seong Mi [Ju A's mother]

Byeol Kang

Hwangbo Hae Su [Strategic planning division's vice president]

Yi-Hyun Jo

Min Ji Hu [Dong Suk's son]

Jin-Yeop Kim

Park Jun Hyeok [Ju A's boyfriend]