Full cast of Mary Kills People

Lee Bo-young

Wu So-jung

12 episodes

Lee Min-ki

Cho Hyeon-woo

12 episodes

Kang Ki-young

Choi Dae-hyeon

12 episodes

Bek Hyun-jin

Koo Kwang-cheol

12 episodes

Kim Tae-woo

Ahn Tae-seong

12 episodes

Yoon Ga-i

Choi Ye-na

12 episodes

Kwon Hae-hyo

Father Yang

12 episodes

Seo Young-hee

Ryu Yi-su

12 episodes

Yoo Seung-mok

MP Baek

12 episodes

Kang Na-eon

Wu-mi

12 episodes

Tae Hang-ho

Detective Bu

12 episodes

Kwak Sun-young

Koo Hye-rim

12 episodes

Min Hye-su

Nun

12 episodes