Hyper Knife- Episodes 3-4

Surgical Sabotage, Backroom Deals, and One Dead Nurse Later… 🧠

Okay, but WHAT was that episode?! If you thought Episode 2 was wild, Hyper Knife Episode 3 just body-slammed us into a whole new level of chaos. We’re talking secret surgeries, backstabbing (literally), and a plot so twisty it should come with a neck brace.

Let’s slice in.

We kick off with a new patient: Kim Myeong-jin, Deok-hee’s old med school buddy, rolls up to the hospital with his son, Ki-young. They’re all smiles, but Se-ok sees right through it. Suspicion mode: activated.

Turns out Deok-hee is nervous about operating on his friend. Ms. Na spills the tea, and when Se-ok finds out he picked Ha U-yeong to assist instead of her? Yeah, she’s not taking that lying down.

So what does she do? Shows up to the OR, says U-yeong is suddenly unwell, and casually stabs Deok-hee’s palm with a scalpel — “Oops!” With Deok-hee out of commission, she jumps in and finishes the surgery. Perfectly, of course.

Afterward, Deok-hee asks her what the hell that was. Se-ok, cool as ever, says she knew he didn’t actually want to save Myeong-jin. He picked U-yeong so he’d have an excuse if things went south. She couldn’t let his “perfect record” get stained. Hero move? Villain move? Who knows anymore.

Meanwhile, back in the present timeline: Deok-hee catches her burying Kwon Sin-gyu’s body… and honestly? He doesn’t even flinch. Just asks her what she’ll do if someone finds out, then repeats his Boston offer like they’re talking job applications, not murder. Se-ok still refuses to operate on him.

The next morning, Sin-gyu’s sister reports him missing. One of the cops gives Se-ok a friendly warning, telling her to be careful since Sin-gyu was clearly obsessed with her. She, meanwhile, is thrilled that her favorite diner won’t be sold anymore. Priorities!

But karma’s got quick hands. Men from the Ministry of Health & Welfare show up to shut down her pharmacy — andHyeon-ho’s clinic is under investigation too. Se-ok knows exactly who’s pulling the strings: Deok-hee. Furious, she calls him and he tells her to come find him in Busan, where he’s attending the fancy Ichida Awards.

Later, Young-joo finds Se-ok in her car mid-anxiety spiral. He tells her to go to a peaceful memory. Cut to the past: Se-ok being officially welcomed into the OR by Deok-hee himself. She used to worship the man.

So naturally, she and Young-joo drive to Busan. There, Se-ok eavesdrops on rich women gossiping in the bathroom about Ichida’s son, Haru — he’s dying, and no surgeon will touch the case. That night, Se-ok sneaks off, smooth as ever, and visits Nanae Ichida in her hotel room. Speaking fluent Japanese (queen behavior), she reminds Nanae that they met in Tokyo with Deok-hee.

Se-ok shows her a surgery video: a hemophiliac boy, zero blood vessels nicked. Basically a surgical flex. She offers to save Nanae’s son — but asks Nanae to yank the Best Surgeon award away from Deok-hee. Ice cold.

Next morning, Nanae rejects her. Calls her despicable. Se-ok storms off, and Ha U-yeong sees her, but she’s not in the mood for small talk.

Meanwhile, Deok-hee’s sending Alan (his U.S. buddy) surgery clips and prepping for something bigger. At the Ichida event, Nanae grills Deok-hee about Se-ok. And guess what? He gushes. Says Se-ok has never failed. Now Nanae’s interested.

She agrees to Se-ok’s offer. Operation: Save Haru is a go. Se-ok calls in Hyeon-ho, and the crew flies to Japan. Surgery starts strong — until Se-ok accidentally nicks a blood vessel. Haru starts bleeding out.

But this is Hyper Knife, and Se-ok is still Se-ok. She pulls it off. Haru lives.

Back in Busan, when the Ichida Award goes to someone else, everyone is shook. Nanae and Se-ok walk into the ceremony like queens, and Deok-hee instantly knows: she did it. The surgery was a success.

After the event, Ki-young (Myeong-jin’s son) approaches Se-ok. She asks about his dad… and realizes something’s off. Ki-young says his father was doing fine, then suddenly vanished. The police think he ran away. Hmmm.

Meanwhile, Deok-hee meets with Inspector Yeom and Detective Lee. They’ve found a lead about that illegal brain surgery video from Episode 1. They ask Deok-hee to come see the evidence.

Flashback: Turns out Deok-hee told Nanae to trust Se-ok before the awards. So yeah — he wanted her to succeed.

But when Se-ok confronts him, she’s on fire. She accuses him of killing Myeong-jin and says he never sent her to Boston because she saved him that day in the OR. That it was all revenge. Deok-hee brushes her off and walks away like he’s got zero time for ghost accusations.

And then we hit the final blow: the detectives bring Deok-hee to the Buddhist temple where Se-ok performed her secret gangster surgery… and they find the body of the nurse Se-ok killed in Episode 1.

Cut to black.

Dead Men in Sheds, Dirty Rings, and Deok-hee’s Deadly Road Trips 🩸

Grab your gloves, scalpelheads — Episode 4 of Hyper Knife just threw another body in the shed and made murder look like casual dinner conversation. We’ve got undercover hospitals, shady rings, and Deok-hee pulling moves straight out of a thriller playbook. Buckle in.

We open with Se-ok, bruised and battered, riding a bus home. She calls in sick to the hospital, claiming she needs winter clothes (lol, sure). U-yeong relays the message to Deok-hee, and the two of them roll up to her place uninvited.

Surprise visit! And Se-ok’s face is looking rough. She blames the ice for her injuries, but Deok-hee isn’t buying it. While U-yeong runs off for meds, Deok-hee pokes around... and finds a dead guy in her shed. Just casually.

Se-ok admits the guy attacked her on the road, and she shanked him in self-defense. Deok-hee’s response? “Need help with the body?” Like he’s offering to carry groceries. She says no, and he walks off, but Se-ok? She looks weirdly happy— like he just asked her out.

Cut to present day: Se-ok and Young-joo swing by the Buddhist temple crime scene, now crawling with police. Se-ok’s living for the drama... until she sees Deok-hee. U-yeong shows up to give Deok-hee his stuff, but the real show is Se-ok casually playing with a police dog. She tells Detective Lee she owns Rottweilers (hint hint), and you can feel the tension.

Se-ok and Deok-hee have a private showdown. She thinks he’s here to pressure her into doing his surgery. She fires back with a threat: she’ll expose him for murdering Myeong-jin. As she storms off, Inspector Yeom says something cryptic to Deok-hee about Se-ok "forgetting what she did to him." Uh, more backstory incoming?

Meanwhile, Ki-young meets with Se-ok and shares a new lead: someone saw his dad at a mental hospital — which has since shut down. They follow the tip to a creepy ex-employee, who claims Myeong-jin was kept there under a fake name, “Lee Seok-gu.” He even promises a photo taken during a press event with patients. Sounds sus, but okay.

Back in Deok-hee’s world, Mrs. Ra’s been tailing Se-ok and shows him pics of her with Ki-young. Deok-hee’s like, “Let her figure it out herself.” We also meet Song Eun-chae, the doctor doing the autopsy on the body found at the temple. Mid-meal, she drops a bomb on Deok-hee: the hair at the crime scene? Rottweiler fur — just like he expected.

And where’s Deok-hee while receiving this info? Chilling at an art gallery. Of course.

Flashback alert: Young Se-ok, passed out in the lab, gets a lecture from Deok-hee. He tells her she’s addicted to surgery and makes her promise to eat and sleep. Clearly, that didn’t stick.

Back at the abandoned hospital, Ki-young gets impatient waiting for the photo. When the sketchy employee injures his hand, they notice something shocking: he's wearing Myeong-jin’s ring. Ki-young flips. Chases the guy right off a cliff. Literally. The employee dies, and Ki-young ends up hospitalized.

Still covered in blood, Se-ok storms into Deok-hee’s office and slams the ring down. She’s livid. She even screams that she would’ve killed Myeong-jin for him. (Romantic?) She accuses him of abandoning her out of shame — because she caught him in the act. Deok-hee just stares, cold and silent.

Later, Deok-hee speeds home, making sure the traffic camera catches his car (hmm...). After his housekeeper leaves, he heads to a separate building. We see that fancy white car again — and BOOM, flashback time:

Myeong-jin gets in the car with Deok-hee. He touches something sticky on the door handle. Deok-hee offers him a wet wipe... and next thing we know, Deok-hee has a knife to his throat while Myeong-jin makes a final phone call to Ki-young.

Yep. Confirmed. Deok-hee killed his old friend.

Back in the present, Deok-hee picks up Detective Lee in the same car. Lee touches the same sticky spot. Accepts the same wet wipe. And just like Myeong-jin, he passes out in the car.

Roll credits.

DramaZen's Opinion

🧠💀 HYPER KNIFE Episodes 3 & 4 – More Twists Than a Brain Fold! 💀🧠

Okay besties, I thought I was ready for more Hyper Knife, but Episodes 3 and 4 came at me like Se-ok with a scalpel — sharp, chaotic, and completely unhinged in the BEST way possible.

Let’s start with Episode 3, where Se-ok shows up to someone else’s surgery, stabs her mentor mid-operation (like it’s just part of the process??), and then saves the patient anyway. We’ve seen power moves, but this?? This was surgical domination. And Deok-hee’s reaction?? Calm, quiet judgment — probably because he was going to botch the surgery himself. And Se-ok knew. She knew he was going to sabotage it and swooped in like some morally flexible superhero. I can’t!

Also, shoutout to Deok-hee’s disturbing calm when he catches her burying a body in the woods. No judgment. Just casual vibes. “Need help?” SIR??? That’s not normal behavior!! But it’s Hyper Knife normal and I live for it.

Then we slide into this creepy mental hospital storyline like it's nothing. Ki-young’s dad may or may not be alive, and Se-ok is suddenly deep into detective mode. Every scene had me yelling at the screen. And then BAM — murder by car chase over a ring. Yes, really. Episode 3 ends with Se-ok screaming at Deok-hee that she would’ve killed for him. AND SHE MEANS IT. Girl, blink twice if you're okay?? (She’s not. None of them are. And it’s glorious.)

Then Episode 4 said “you liked one body? How about another?”

Se-ok’s casually hiding another corpse in her shed, and when Deok-hee finds it, they have what might be the chillest convo about MURDER ever filmed. Honestly, their weird little murder-bonding moments are...kinda cute? I hate myself for saying that.

And Deok-hee?? He’s officially entered villain mastermind mode. The wet wipe?! The wet wipe is now a murder weapon?? I’ll never trust hygiene again. He straight-up poisons Detective Lee like he’s adding sugar to tea. Calm. Calculated. Absolutely terrifying.

Also, I’m obsessed with how everyone in this show is somehow both the villain and the victim?? Se-ok and Deok-hee are in this toxic, twisted dance of revenge, obsession, and surgical showdowns, and I cannot look away.

Highlights of these two episodes:

• Se-ok’s one-woman murder clean-up crew.

• Deok-hee’s casual attitude toward homicide.

• The cursed white car and its deadly door handle.

• ROTTWEILER HAIR EVIDENCE (iconic)

• Se-ok’s bloody, rage-fueled office meltdown.

• The rising body count. We’re four episodes in and we’re already running out of shovels.

In conclusion:
Hyper Knife is unhinged, morally grey, wildly addictive chaos — and I’m OBSESSED. Episodes 3 and 4 just proved that this show has no intention of slowing down. Every episode feels like a full-on surgical thriller with a side of psychological warfare, and honestly? That’s exactly my kind of drama.

Catch me sharpening my metaphorical scalpel for next week. LET'S GO. 🩸🖤