Mary Kills People

Top Cast

Lee Bo-young as Wu So-jung
Lee Min-ki as Cho Hyeon-woo
Kang Ki-young as Choi Dae-hyeon
Bek Hyun-jin as Koo Kwang-cheol
Kim Tae-woo as Ahn Tae-seong
Yoon Ga-i as Choi Ye-na
Kwon Hae-hyo as Father Yang
Seo Young-hee as Ryu Yi-su
Yoo Seung-mok as N/A
Kang Na-eon as Wu-mi

Seasons

Season 1 (2025)

No overview available for this season.

Episodes:

Ep. 1: Do You Want to Finish? (2025-08-01)

A terminal patient, Hyun-woo, requests assisted death from the doctor, Wu So-jung (Lee Bo-young), and her assistant Dae-hyun (Kang Ko-young).
Ep. 2: Why Do You Do this? (2025-08-02)

Wu So-jung begins to cross a line as she develops feelings towards Hyeon-woo (Lee Min-ki)
Ep. 3: I'll Send You Wherever You Want (2025-08-08)

So-jung and Dae-hyeon become trapped, as the police investigation closes in.
Ep. 4: What You Are Doing Now Is Murder! (2025-08-09)

So-jung makes a dangerous deal with a drug dealer Gwang-chul (Baek Hyun-jin) in order to acquire the euthanasia drug. The police investigation into the case is becoming increasingly fraught.
Ep. 5: Over Time, It May Become a Human Right (2025-08-16)

So-jeong, who brought Si-hyeon out of the hospital, is found injured and abandoned on the street. Dae-hyeon, who finds out about this, goes to find Gwang-cheol.
Ep. 6: You Are Being Arrested on Suspicion of Murder (2025-08-22)

When patient Yoon-hee (Yang Jo-ah) suddenly dies at Maria Welfare Hospital, So-jeong (Lee Bo-young) and Father Yang (Kwon Hae-hyo) are investigated by the police as suspects for murder.
Ep. 7: Can We Turn Away from Such Pain for Fear of Criticism? (2025-08-23)

Dae-hyun (Kang Ki-young) is offered a judicial deal. Meanwhile, Ye-na's (Yoon Ga-i) older brother, Geon-su (Kang Ki-dong), visits So-jeong (Lee Bo-young) and asks her to help him.
Ep. 8: Are You Saying We Should Have a Funeral before We Die? (2025-08-29)

Yena (Yoon Ga-i) goes on a final trip with Geon-su (Kang Ki-dong), and Gwang-cheol (Baek Hyun-jin) starts a business of assisted death targeting the rich, which brings him into conflict with So-jeong (Lee Bo-young).
Ep. 9: Please, Save Me from This Pain (2025-08-30)

Yena (Yoon Ga-i) embarks on her final journey with Geon-su (Kang Ki-dong), and Gwang-cheol (Baek Hyun-jin) clashes with So-jeong (Lee Bo-young) as he begins a business of assisted death targeting the rich.
Ep. 10: The Situation Is Getting Out of Control and Dangerous (2025-09-05)

So-jeong (Lee Bo-young) is attacked by the police at the scene of an assisted death due to Gwang-cheol's (Baek Hyun-jin) scheme. Unable to stand by and watch, So-jeong (Lee Bo-young) steps in herself.
Ep. 11: There Is No Place to Run Anymore (2025-09-06)

So-jeong (Lee Bo-young) decides to save Mi-young (Woo Mi-hwa) and asks Ji-hoon (Lee Min-ki) for help. Ji-hoon (Lee Min-ki) demands she confess everything...
Ep. 12: There Are Definitely Patients Who Need Euthanasia (2025-09-12)

Dae-hyun (Kang Ki-young), who has just been released from prison, visits So-jeong (Lee Bo-young), who works at Maria Welfare Hospital. Meanwhile, Seon-ju (Kim Young-ok), a terminally ill breast cancer patient, appears before them.