The Mantis: Original Sin TV Series (2025) – Watch Online, Release Date, Cast, Episodes, Story, Platform, Trailer, Poster, Review

Poster & Photos
The Mantis: Original Sin TV Series Details
Based on | La Mante by Alice Chegaray-Breugnot, Nicolas Jean, Grégoire Demaison and Laurent Vivier |
Original title | 사마귀 |
Also known as | Mantis, Samagwi, Samagwi |
Country | South Korea |
Language | Korean |
Genres | Mystery, Thriller, Police procedural |
Season | 1 |
Episodes | 8 |
Release date | September, 2025 |
Aired on | Friday, Saturday |
Running time | 70min |
Age rating | 15+ |
Starring | Go Hyun-jung, Jang Dong-yoon |
Directed by | Byun Young-joo |
Written by | Lee Young-jong |
Developed by | Studio S (planning) |
Produced by | Kim Yong-jin, Yoo Jeong-hoon |
Executive producers | Lee Ock-gyu (CP), Choi Jeong-bok, Kim Min-jeong |
Production Company | Mega Monster Merry Christmas |
Original Network | SBS TV |
Cast & Characters
main
- go hyun-jung as jung yi-shin, a woman imprisoned for being a serial killer
- jang dong-yoon as cha soo-yeol, a detective and jung yi-shin’s estranged son
supporting
- jo sung-ha as jung-ho, a police officer who advised cha soo-yeol to become a detective
- lee el as na-hee, a female police officer
- kim bo-ra as lee jung-yeon, president of a pottery and cha soo-yeol’s wife
Storyline
A woman was imprisoned as a serial killer a long time ago. The story unfolds as someone begins committing a series of murders imitating her.
About The Mantis: Original Sin TV Series
The Mantis: Original Sin (Korean: 사마귀) is an upcoming South Korean mystery-thriller-police procedural television series written by Lee Young-jong and directed by Byun Young-joo based on the 2017 TF1 series La Mante. Go Hyun-jung and Jang Dong-yoon will portray the lead roles.
The eight-episode drama is written by Lee Young-jong and directed by Byun Young-joo. It is produced by Studio S and Mega Monster and Merry Christmas for SBS TV.
The Mantis: Original Sin will be Lee’s debut television series. He had written the script for the films Flu (2013), The Witness (2018) and 12.12: The Day (2023).
On 14 November 2023, the production crew announced that Go Hyun-jung was offered the main role for the series. On 23 July 2024, Go and Jang Dong-yoon were confirmed to play the lead roles.
Ji Chang-wook was approached for Cha Soo-yeol’s role but declined it because of a scheduling conflict.
Kim Bo-ra previously portrayed the role of Ha Seol in the 2024 MBC TV Friday-Saturday drama Black Out, director Byun Young-joo’s first television series.
Principal photography began in August 2024. Shooting began in October 2024 and was to finish in February 2025.
There was a special teaser for the series aired on December 21, 2024 during the 2024 SBS Drama Awards.
The Mantis: Original Sin Release Date
The series is scheduled to premiere on SBS TV in the second half of 2025.
The Mantis: Original Sin Episodes
Where to Watch The Mantis: Original Sin TV Series Online?
The Mantis: Original Sin TV Series will be released soon, and currently unavailable on the streaming platform. We will update soon.