# Nightmare: Squid Game’s Lee You-mi Returns to Netflix in a Show That Punishes You in Your Sleep

URL: https://technosports.co.in/nightmare-squid-games-lee-you-mi-returns/  
Published: 2026-09-14  
Updated: 2026-09-14  
Author: Reetam Bodhak

Forget prison cells — in Netflix’s next big K-drama, justice happens inside your dreams. *Nightmare*, a new sci-fi crime thriller from SBS, is heading to Netflix in April 2027, and the premise alone is enough to make you double-check your bedroom door tonight.

Leading the cast is [Lee You-mi](https://en.wikipedia.org/wiki/Lee_Yoo-mi), the actress who became a global name after *Squid Game*, alongside *Song of the Bandits* star Kim Nam-gil. Together they play detectives caught inside a justice system that doesn’t just lock criminals up — it traps their minds in nightmares they can never wake up from.

## Nightmare: Key Details

| Detail | Information |
| --- | --- |
| Netflix Window | April 2027 |
| Genre | Sci-fi crime thriller |
| Network | SBS |
| Director | Lee Dan (*Taxi* Season 2) |
| Writer | Kim Kyu-won (*Alice*) |
| Lead Cast | Kim Nam-gil, Lee You-mi |
| Supporting Cast | Jo Hyun-chul, Shin Sae-kyeong |
| Premise | AI punishes criminals through inescapable dream torment |

## A Premise Built on Fear as Justice

The show’s world is unsettling by design: when criminals slip through the legal system, AI technology drags them into their own subconscious, weaponizing their deepest fears as punishment. Kim Nam-gil plays Detective Kim Tae-i, a sharp investigator from the Violent Crimes Unit who uncovers a much bigger conspiracy behind the technology as he digs deeper.

![Nightmare](https://technosports.co.in/wp-content/uploads/2026/09/nightmare-4-5-1024x576.webp)

Lee You-mi’s character, Detective Jang Gyu-eun, adds an even darker layer — outwardly a quiet victim specialist, she secretly moonlights as a “nightmare architect,” the very person shaping the punishments criminals endure. It’s a fascinating double-life setup that could make her the most compelling part of the entire series.

With two proven Netflix leads and a director who knows how to build tension episode to episode, *Nightmare* looks positioned to be one of 2027’s early must-watch K-dramas.

For more K-drama casting news, premiere dates, and first-look breakdowns, check out the entertainment coverage on [TechnoSports](https://technosports.co.in).

## FAQs

### **When is Nightmare releasing on Netflix?**

 It’s currently expected in April 2027, though SBS and Netflix haven’t officially confirmed the exact date.

### **Who stars in Nightmare?**

  
Squid Game’s Lee You-mi and Song of the Bandits’ Kim Nam-gil lead the series as two detectives.