S01E011:00:081. Episode 1When a series of terrible murders ensues in a residential area, Cha Su-yeol is forced to seek help from Jeong I-sin, a serial killer from the past.
Queen Mantis Season 1 – Watch online
8 episodes · since September 5, 2025
All episodes of season 1 of Queen Mantis: summaries, air dates, ratings and legal platforms (dubbed or subtitled depending on the platform).
S01E011:00:081. Episode 1When a series of terrible murders ensues in a residential area, Cha Su-yeol is forced to seek help from Jeong I-sin, a serial killer from the past.
S01E021:01:502. Episode 2The culprit has been arrested, but the victim’s whereabouts remain unknown. Su-yeol struggles to save a life as I-sin reveals her true intentions.
S01E031:01:363. Episode 3I-shin offers assistance with the investigation, but it's unclear why she would help a cop. Su-yeol unravels the origins of I-shin's murderous instinct.
S01E041:00:554. Episode 4The culprit begins to close in on Su-yeol's family. I-shin pressures Su-yeol to take action — but she happens to be the one threatening his family.
S01E051:00:215. Episode 5Su-yeol finds I-shin in his home after she vanishes under police watch. The killer demands to speak to I-shin and gives her a hint about the plan.
S01E061:00:076. Episode 6Shaken by recent events, Su-yeol attempts to confide in Lee Jung-yeon. During a tense call, I-shin manipulates the killer into exposing a crucial lead.
S01E071:00:257. Episode 7As Jung-yeon copes with the truth of Su-yeol's past, the killer reveals their identity — and takes a hostage, forcing Su-yeol into a dangerous bargain.
S01E081:00:128. Episode 8After a tense hostage exchange, I-shin confronts her protégé. Su-yeol makes a grim discovery about his family's fractured past.Where to stream Queen Mantis Season 1
Subscription
Free with ads
Rakuten Viki
Rakuten VikiAvailability provided by JustWatch via TMDB, details on TMDB. Offers in the United States, subject to change.
About season 1
Season 1 of Queen Mantis has 8 episodes, aired from September 5, 2025 to September 27, 2025 on SBS. Episodes run 60 minutes on average. The highest rated episode is “Episode 2” (S01E02, 7.5/10).
Frequently asked questions about Queen Mantis Season 1
How many episodes are in Queen Mantis Season 1?
Queen Mantis Season 1 has 8 episodes.
When did Queen Mantis Season 1 air?
The first episode aired on September 5, 2025 and the last one on September 27, 2025.
Where to watch Queen Mantis Season 1 online?
In the United States, Queen Mantis is available with a subscription on Netflix, Rakuten Viki and OnDemandKorea, for free with ads on Rakuten Viki (source: JustWatch via TMDB, offers subject to change). Availability of each season depends on the platform.