A Korean crime thriller where a miracle cure collides with murder charges
What would you do if the one person who might save your child is also the prime suspect in a string of brutal deaths?
Bloody Flower (블러디 플라워) dives straight into that nightmare—where hope comes with handcuffs, and “breakthrough science” may be nothing more than a prettier name for human experimentation. With public outrage rising and the courts closing in, this Korean crime thriller turns a single case into a ticking-clock battle over truth, ethics, and survival—perfect for fans searching for a kdrama legal thriller about human experimentation.
The Premise: A Cure in His Blood—And Bodies in His Wake
Lee Woo Gyeom (Ryeo Un) was once a promising medical student—until he became something else entirely. Arrested for kidnapping and linked to multiple mysterious deaths, Woo Gyeom claims he isn’t a murderer. He insists he’s a pioneer: someone who has developed technology capable of curing diseases modern medicine still can’t defeat, including cancer.

It sounds impossible. Then the testimonies start pouring in—patients who say they’ve already been treated.
That’s when the case stops being simple, and Bloody Flower starts to feel like the kind of asian drama crime thriller with medical mystery that keeps you questioning every “fact” presented on-screen.
One Lawyer, One Daughter, One Impossible Choice
Park Han Joon (Sung Dong Il) is the kind of lawyer who’s seen every shade of guilt. But this case hits where the law can’t protect him—his daughter is terminally ill, and time is running out.

Woo Gyeom makes an offer Han Joon can’t easily refuse:
- Legal defense, in exchange for
- a promise to cure Han Joon’s daughter.

It’s not just a deal. It’s a trap with emotional teeth. Because defending Woo Gyeom could destroy Han Joon’s career—and if Woo Gyeom is lying, it could destroy his daughter’s last chance too.
The Prosecutor Who Won’t Look Away
Standing opposite them is prosecutor Cha I Yeon (Keum Sae Rok), who wants Woo Gyeom held fully accountable for the deaths tied to his experiments. While the defense fights for possibility, the prosecution fights for consequence.

And Bloody Flower thrives in that collision—where justice, grief, ambition, and desperation keep shifting the line between “saving lives” and “taking them.”
Episodes 1–2: What Happens First?
Ep 1 — “The Medical Miracle or Murderer?”

Woo Gyeom is arrested in connection with a series of strange deaths. He claims his work—centered on blood-based treatment and transfusions—was meant to save lives, not end them. Against rising suspicion and public backlash, Han Joon takes the case and begins pulling at the threads of Woo Gyeom’s story… only to find they may lead somewhere far darker than anyone expected.
Ep 2 — “A Desperate Gamble”

Woo Gyeom raises the stakes: he offers to cure Han Joon’s daughter—if Han Joon defends him. With public opinion hardening and pressure mounting from every side, Han Joon risks everything to find proof that Woo Gyeom’s methods are legitimate. But every step forward brings new challenges, forcing him to confront a brutal question: what if the cure is real—but the cost is unforgivable?
Why Bloody Flower Belongs on Your Watchlist
A thriller that doesn’t give easy answers. This isn’t just “catch the criminal.” It’s a story that presses on the most uncomfortable moral dilemma of all: If a monster can save lives, do you let him?

Expect:
- A high-stakes courtroom and investigation battle
- Ethical clashes over biotechnology and human experimentation

- Psychological tension driven by personal desperation
- A central mystery that keeps flipping sympathy and suspicion
If you’re browsing Viu Korean drama thriller recommendations and want something darker, smarter, and morally messier than the average whodunit, this one’s built to hook you early and keep tightening the screws.

Note: Bloody Flower is streaming on Viu, but it isn’t a Viu Original—it’s a strong licensed pick rather than an in-house production. If you’re specifically hunting for a Viu Original Korean thriller, Taxi Driver 3 is a great alternative to add to your watchlist.
Drama Info at a Glance

Title: Bloody Flower (블러디 플라워)
Also Known As: Flower of Death, Jugeumeui Kkot, The Saviour: Choice of Death
Genres: Thriller, Mystery, Psychological, Crime
Director: Han Yoon Sun
Adapted From: the novel Flower of Death (죽음의 꽃) by Lee Dong Gun
Cast
Ryeo Un as Lee U Gyeom

— A medical school dropout arrested for kidnapping and later implicated in murders and human experimentation. He claims he’s developed a cure-all medical technology and will reveal it only if he isn’t held responsible for his past experiments.
Sung Dong Il as Park Han Joon

— A lawyer forced into an impossible choice: keep Lee U Gyeom alive because his daughter has a brain tumor, or let justice take its course. He becomes a key figure in the fight over whether U Gyeom is a monster or mankind’s last hope.
Keum Sae Rok as Chae Yeon

— A prosecutor determined to see Lee U Gyeom punished with death for the unjust deaths tied to his case. She stands for legal accountability as public doubt grows around his medical claims.
Shin Seung Hwan as Cho U Cheol
— A journalist who holdsthe key to sway public opinion.
Jung So Ri as Yun Min Gyeong
— A relentless ally uncovering corruption.
Watch Bloody Flower on Viu Now
If you’re craving a psychological thriller that blurs the line between justice and survival, Bloody Flower (블러디 플라워) is the kind of drama that doesn’t let you look away. Press play on Viu and step into a case where a man accused of kidnapping, murder, and human experimentation claims he can cure the incurable—and everyone around him is forced to decide whether he’s a monster or mankind’s last hope.
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