- Kim Young-min - Jung Man-bok
- ??? - Lee Chung-ryeol
- ??? - Kim Yun-hui
- Nam Kyung-eup - Yoon Jeung-pyung
- ??? - Han Jung-yun
- Choi Dae-hoon - Yoon Se-jun
- Hwang Woo-seul-hye - Do Hye-ji
- Park Hyeong-su - Yoon Se-hyung
- ??? - Goh Sang-ah
- Jang Hye-jin - Goh Myoung-eun
- Park Myung-hoon - Goh Myoung-seok
- Go Gyu-pil - Hong Chang-sik
- Lim Cheol-soo - Park Soo-chan
- ??? - Ma Young-ae
- Kim Sun-young - Na Wol-sook
- Cha Chung-hwa - Yang Ok-geum
- ??? - Hyun Myung-sook
- Kim Young-pil - Kim Ryong-hae
- Hong Woo-jin - President Chun
- Yoon Sang-hoon - Manager Oh
- Ham Jin Sung - Chul-gang's Subordinate
- Kim Ga-bin - North Korean Operator
- Jung Kyung-ho - Cha Sang-woo
- Ha Seok-jin - Lee Moo-hyeok
- ??? - Choi Ji-woo
- ?? - Shaman
- Park Young-bok - Na Wol Suk's Husband
- Cho Joon - Agent
- Jang Young-hyeon - Paragliding Office Employee
- Oh Kyu-taek - Real Estate Agent
- Ahn Su-bin - Seo Dan's Friend
- ??? - NK Taxi Driver
- ??? - Taxi Driver
- Park Seo-yeon - Seo Dan (young)
- Park Yong - Lee Geon Woo
- Lee Dong-yong - Grave Robber
- Lim Dong-yoon - Grave Robber
- Kwon Dong-ho - Purchasing Manager
- Park Seung-jun - Ho Young
- Cha Sung-je - Beggar Boy
- Ahn Se-bin - Beggar Boy's Sister
- Baek Seung-chul - Fishing Boat Captain
- Lee Gyu-hoe - Govt. Official
- Lee Se-rang - Elevator Operator
- Kim Tae-yeon - Yoon Se-ri (young)
- Choi Mu-in - Hwang Tae Yong
- Kim Yoon-joo - Jin Sook
- Lee Cheon-mu - Little Boy
- Yoo Tae-joo - Armory Staff
- Lee Sang-eun - Nurse Moon Hee Joo
- Choi Hong-il - Jang So Chul
- Lee Do-hye - Patient
- Park Ok-chul - Elevator Operator
- ??? - Clothing Shop Owner
- Go Han-min - Jung Hyuk's Surgeon
- Shin Jun-Chul - Jang Jong Chul
- Jang Jun-nyeong - Military Director
- ??? - North Korean Kidnapper
- Shin Mi-yeong - Elevator Operator
- Yoo Seung-il - Detention Center Head
- Koo Ji-hye - Seo Dan's High School Classmate
- Kim Soo-hyun - Bang Dong Goo
- Park Chan-woo - NK Doctor
- Shin Dong-ryeok - English Tutor
- Lee Jeong-yeol - Military Trial Judge
- Kim Tae-Hoon - Seri's Choice Employee
- Oh Jae-se - Commander at Guard Post
- Bae Bo-ram - Seo Dan's Friend
- Jung Young-hoon - Seri's Choice Security
- Park Hyo-bin - Employee
- Nam Jeong-woo - Military Director's Subordinate
- Kim In-sun - Office Worker on Lunch Break
- Yoo Jeong-ho - NIS Section Chief Kim
- Park Ki-ryung - NIS Executive
- Jeong Dong-geun - Se-ri's Surgeon
- Choi Seung-yoon - NIS Agent
- Son Dong-hwa - NIS Agent
- Han Dong-ho - NIS Agent
- Song Hoon - Government Official
- ???
- ???
- ???
- Baek Ye-rin
- ???
- Kim Jae-hwan
- ???
?? hace el papel de Lee Jung-hyeok.
Son Ye-jin hace el papel de Yoon Se-ri.
??? interpreta a Seo Dan en la serie.
??? hace el papel de Koo Seung-joon.
Yang Kyung-won interpreta a Pyo Chi-soo en la serie.
??? hace el papel de Park Gwang-beom.
??? interpreta a Kim Joo-meok en la serie.
??? interpreta a Geum Eun-dong en la serie.
??? interpreta a Jo Cheol-kang en la serie.
Kim Young-min hace el papel de Jung Man-bok.
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