Mary Kills People

A patient named Hyeon U appears in front of doctors So Jeong and Dae Hyeon, who secretly provide assisted dying to terminally ill patients, and requests assisted dying. (Source: TVDb) read more

Because of U Mi, So Jeong's secret is in danger of being revealed. Meanwhile, So Jeong's feelings for Hyeon U cross the line as a doctor. (Source: TVDb)

Dae Hyeon accepts Su Yeong's request to assist her in her death and grants her final wish. Meanwhile, So Jeong is caught in a police trap while trying to help Hyeon U. (Source: TVDb) read more

So Jeong makes a dangerous deal with drug dealer Gwan Cheol to obtain assisted death drugs. The police investigation into So Jeong is becoming increasingly pressing. (Source: TVDb) read more

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. (Source: TVDb)

When patient Yun Hui suddenly dies at Maria Welfare Hospital, So Jeong and Father Yang are investigated by the police as suspects of murder. (Source: TVDb)

Dae Hyeon is offered a judicial deal. Meanwhile, Ye Na's older brother, Geon Su, visits So Jeong and asks her to help him. (Source: TVDb)

Ye Na goes on a final trip with Geon Su, and Gwang Cheol starts a business of assisted death targeting the rich, which brings him into conflict with So Jeong. (Source: TVDb)

Dae Hyeon declares that he will not assist in assisted dying, and Hyeon U finds Dae Hyeon strange and goes to see him at Maria Welfare Hospital. (Source: TVDb)