My Secret, Terrius

Ji-Hyun Park

Clara Choi

Yi-suk Seo

Kwon Yeong-sil

Yi-suk Seo

Kim Tae-hee (NIS deputy director)

Eom Hyo-Seob

Shim Woo-cheol

Tae-Hwan Choi

Kim Ji-hoon (Kwon's aide)

Ye-Rin Ok

Cha Joon-hee

Hyeon-geol Lee

Park Soo-il

So Ji-seob

Kim Bon

Jasper Cho

K

In-sun Jung

Go Ae-rin

Ho Joon Son

Jin Yong-tae

Ho Joon Son

Jeong In-soo

Im She-mi

Yoo Ji-yeon

Kang Ki-young

Kim Sang-ryeol

Sung-Joo Kim

Ra Do-woo

Kim Yeo-jin

Shim Eun-ha

Si-a Jeong

Bong Sun-mi

Yoon Sang-Hyun

Doctor Yoo

Young Gu Kim

Private Investigator

Kim Byeong-Ok

Yoon Choon-sang