In Mary Kills People Episode 4, it showed how far people will go when trust is broken. The night’s story was intense. It was not just about right or wrong. It was about survival.
Ban Ji-hoon (Lee Min-ki) was still chasing Woo So-jung (Lee Bo-young). She had learned the truth. He had trapped her, and it hurt more than she expected. She told herself she trusted the wrong man.
Ji-hoon went to see her, his voice sharp. “Stop what you’re doing. This is crazy,” he warned. Woo So-jung did not back down. Her eyes were cold as she asked how lying to others for a goal could ever be fine. She slapped him, her words cutting even more. “I didn’t know helping the sick was a crime,” she said.
Ji-hoon pushed back. “What you’re doing is murder,” he told her. He said she could not hide forever. She laughed at the idea. “You can never catch me. I’m innocent.”
Many viewers might wonder — is Woo So-jung really a criminal, or is she a misunderstood hero? This is where the drama gets morally complicated. The episode subtly forces the audience to confront their own stance on euthanasia.
In South Korea, assisted dying is not legally recognized, and that reality shapes the danger she faces. For some, her actions feel compassionate; for others, they are unforgivable. That moral gray zone is what makes this confrontation between Ji-hoon and So-jung sting so sharply.
Plans, Alibis, and Shredded Truth
Woo So-jung was not standing still. She started erasing every trace of her work in euthanasia. She told nurse Choi Ye-na to stick to one story — it was only counseling. All data had to be destroyed. She ordered her to stop working and volunteer at another hospital for now.
She then met Choi Dae-hyun. They threw away risky medication and agreed to create a safe reason for their frequent meetings. From now on, they would contact each other only through Father Yang’s hospital. If the drugs were found, they would call it a violation of the Narcotics Control Act.
Police soon raided Bunseong Hospital. Woo So-jung acted calm, telling them, “This is a place for patients. Please don’t disturb treatment,” but inside, she was alert.
The Mary Kills People episode 4 recap also revealed her meeting with drug dealer Gu Kwang-chul. His methods were cruel. He humiliated her, checked if she was using drugs, handed over medicine, and left a threat hanging in the air.
Gu Gwang-chul’s Rise as a Ruthless Predator
Later, Gu pressured her again. He accused her of messing with his business and demanded Kim Si-hyeon be removed from the hospital. This scene also expands Gu Gwang-chul’s role from a side antagonist to a full-blown predator in the story. His manipulation is pure power play — taking hostages, making demands, and cornering So-jung into moral compromises.
It’s interesting that the writers chose to make him both a criminal rival and a narrative mirror: like her, he operates outside the law, but for entirely selfish reasons.
That contrast sharpens the viewer’s perception of So-jung’s motives. He even took her nephews hostage. Her voice turned hard. “If the kids get hurt, I won’t stay still,” she warned.
Kim Si-hyeon had his own trouble. He had unknowingly supplied drugs to Choi Dae-hyun. Woo So-jung recognized him by his tattoo, which matched the one she had heard about earlier.
Gu Gwang-chul was done with words. He set fire to the hospital and planned to cause an explosion to get Kim Si-hyeon out. Woo So-jung gave in. “I’ll do it. I’ll take responsibility,” she said. In the end, she became a hostage herself. It was the only way to escape with Kim Si-hyeon.
A Chess Game of Dangerous Bargains
From a storytelling perspective, episode 4 works almost like a chess game. Every choice So-jung makes closes some doors while opening riskier ones. The safe paths are gone; what’s left are dangerous bargains with people she doesn’t trust. For viewers following the plot week-to-week, it’s the kind of setup that promises an explosive mid-season twist.
Mary Kills People episode 4 recap leaves one question — how far can Woo So-jung keep running before the walls close in? She has cut ties, hidden records, and taken huge risks. But every move brings her closer to danger. The line between saving a life and taking one has never been thinner.
Who do you think is telling the truth in Mary Kills People Episode 4?
How Does this Article Make You Feel?
Kavita Mishra is a dynamic writer and passionate Korean entertainment enthusiast, combining her love for K-pop and K-drama with a flair for storytelling. With a keen eye for the latest trends, Kavita crafts articles that capture the pulse of K-pop idols, chart-topping hits, and the most buzz-worthy dramas taking over screens worldwide.
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