Original Sin Season 2, Episode 21: Episode 21

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Episode 1

After Pang Beiyuan’s case, Dai Yu and Zheng Ming face psychological evaluations—just as a staged murder tied to a man with multiple identities pulls them into a new mystery.

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Episode 2

A second body links Liu Ping to his past, forcing Dai Yu and Zheng Ming to reopen a trail that leads back to 2007.

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Episode 3

As clues resurface from an unsolved kidnapping, Dai Yu begins suspecting Yang Guang and Ma Xiaoquan’s past may be darker than anyone knew.

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Episode 4

A father’s confession and forensic inconsistencies push Zheng Ming and Dai Yu to question whether two recent deaths were really accidents.

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Episode 5

When new evidence surfaces, suspicion shifts toward Feng Tingye and Li Xueqiong—just as hidden motives begin to unravel.

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Episode 6

Li Xueqiong’s apparent suicide raises red flags, and Dai Yu uncovers signs of a carefully staged crime scene.

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Episode 7

As tensions explode between Feng Tingye and Cheng Kangren, Zheng Ming races to stop another killing.

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Episode 8

Shocking revelations tie a 2007 accident to Xie Tong’s family—sending her into emotional collapse.

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Episode 9

A cryptic pattern hidden in knitting and playing cards leads Dai Yu to a devastating breakthrough.

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Episode 10

Xie Tong confesses to years of calculated revenge, forcing Zheng Ming into a heartbreaking final confrontation.

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Episode 11

A frozen body discovered in a cold storage facility draws Dai Yu back into work as Zheng Ming uncovers a long-missing man’s secrets.

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Episode 12

As Liu Rong faces the truth about her husband’s death, forensic evidence suggests the crime scene was carefully relocated.

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Episode 13

After Cheng Jiancai’s sudden death, three suspects turn on each other—each with something to hide.

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Episode 14

Dai Yu’s autopsy reveals murder staged as an accident, exposing a deeper conspiracy between Liu Rong and her allies.

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Episode 15

The truth behind the apartment fire and two connected murders emerges, revealing a revenge plot years in the making.

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Episode 16

A deadly synthetic toxin resurfaces, pulling Dai Yu, Zheng Ming, and Xu Haishan into a shadow war with a dangerous organization.

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Episode 17

What appears to be an accidental electrocution unravels into murder, as buried family secrets surface in Huangjiazhuang.

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Episode 18

As a second body is recovered from the lake, Zheng Ming realizes Wang Yu may not have acted alone.

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Episode 19

Wang Yu confesses to killing her abusive husband—but forensic evidence suggests another hand was involved.

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Episode 20

A chilling link between Huang Hankun and a 2007 assault case leads Dai Yu to suspect a serial offender.

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Episode 21

A faded exam number points Zheng Ming toward Wen Xian—while Dai Yu senses he is being watched.

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Episode 22

DNA evidence and a raincoat tie Wen Xian to multiple crimes, while Xu Haishan’s past resurfaces.

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Episode 23

Wen Xian confesses his motives to Xu Haishan, but escapes after a violent confrontation.

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Episode 24

After Wen Xian’s arrest, a shocking revelation about Xu Haishan’s hidden actions tests the trust between him, Dai Yu, and Zheng Ming.