TV series
Cha Su-yeol, a police officer who has long despised his mother, the notorious 'Mantis' serial killer, must reluctantly turn to her for help when a copycat killer emerges.
Streaming, rental and purchase options
Checked Sep 5, 2026
Queen Mantis is available to stream on Netflix, OnDemandKorea, and Rakuten Viki in United States. Use the direct links below to open the provider.
Cha Su-yeol, a police officer who has long despised his mother, the notorious 'Mantis' serial killer, must reluctantly turn to her for help when a copycat killer emerges.
Choose an episode, then use the watch options above for the show.
Episode 1
When 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.
Guest stars Go Joon, Byun Yo-han, Kang Yu-ra, Joo Hae-eun
Episode 2
The 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.
Where to watch Queen Mantis
Episode 3
I-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.
Where to watch Queen Mantis
Episode 4
The 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.
Guest stars Ko Dong-hyoung, Jo Jae-yun, Jo Young-mi, Park Hyun-young
Episode 5
Su-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.
Where to watch Queen Mantis
Episode 6
Shaken 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.
Where to watch Queen Mantis
Episode 7
As 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.
Where to watch Queen Mantis
Episode 8
After a tense hostage exchange, I-shin confronts her protégé. Su-yeol makes a grim discovery about his family's fractured past.
Where to watch Queen MantisEpisode information updated Sep 12, 2026
Go Hyun-jungJeong Yi-shin
Jang Dong-yoonCha Su-yeol
Cho Seong-haJoong-ho
ELNa-hee
Kim Bo-raLee Jung-yeon
Lee Hwang-euiJung Hyeon Nam [I Sin's father]
Kim Min-hoBae Seong Gyu [Detective]
Kim Tae-jeongChoi Hyeok [Detective]
SBSSouth Korea
Merry ChristmasSouth Korea
Mega MonsterSouth Korea
Studio SSouth Korea
