The WORST episodes of Queen Mantis

Every episode of Queen Mantis ever, ranked from worst to best by thousands of votes from fans of the show. The worst episodes of Queen Mantis!

To stop a copycat criminal, a cop must work with the serial killer behind the original murders — his mother who he's spent his life trying to forget.

Last Updated: 10/22/2025Network: SBSStatus: Ended

7.11

9 votes

#1 - Episode 6

Season 1 - Episode 6 - Aired 9/20/2025

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.

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7.27

11 votes

#2 - Episode 4

Season 1 - Episode 4 - Aired 9/13/2025

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.

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7.29

14 votes

#3 - Episode 3

Season 1 - Episode 3 - Aired 9/12/2025

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.

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7.29

17 votes

#4 - Episode 2

Season 1 - Episode 2 - Aired 9/6/2025

The culprit has been arrested, but the victim’s whereabouts remain unknown. Su-yeol struggles to save a life as I-shin reveals her true intentions.

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7.33

18 votes

#5 - Episode 1

Season 1 - Episode 1 - Aired 9/5/2025

When a series of terrible murders ensues in a residential area, Cha Su-yeol is forced to seek help from Jung I-shin, a serial killer from the past.

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7.43

7 votes

#6 - Episode 7

Season 1 - Episode 7 - Aired 9/26/2025

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.

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7.56

9 votes

#7 - Episode 5

Season 1 - Episode 5 - Aired 9/19/2025

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.

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8.36

11 votes

#8 - Episode 8

Season 1 - Episode 8 - Aired 9/27/2025

After a tense hostage exchange, I-shin confronts her protégé. Su-yeol makes a grim discovery about his family's fractured past.

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