Original Sin

Season 1

Forensic expert Dai Yu and detective Zheng Ming team up to solve complex crimes involving strange disappearances, mysterious deaths, and an organ trafficking ring. As they confront personal challenges and dark twists, they both are pushed to grow while navigating the dangers of their work.

Where to Watch Original Sin • Season 1

25 Episodes

Episode 1
E1
Episode 1When a headless body surfaces from a lake, Zheng Ming and Dai Yu uncover a nervous witness who may be hiding the truth.
Episode 2
E2
Episode 2As Zheng Ming zeroes in on Hao Yuanfang, buried ties to Huang Xiaojie complicate the investigation.
Episode 3
E3
Episode 3Dai Yu digs into Jin Ji’s troubled past while a key witness vanishes, pushing Zheng Ming closer to a breakthrough.
Episode 4
E4
Episode 4A second body surfaces and a suspect escapes, forcing Zheng Ming and Dai Yu to escalate the hunt.
Episode 5
E5
Episode 5Dai Yu’s forensic reconstruction corners a suspect—but Zheng Ming still can’t locate the missing victim.
Episode 6
E6
Episode 6A stolen corpse and missing college students pull Dai Yu and Zheng Ming into overlapping nightmares.
Episode 7
E7
Episode 7After a late-night sighting, Dai Yu uncovers a chilling clue at a cliffside crime scene.
Episode 8
E8
Episode 8Zheng Ming keeps a crucial discovery secret as suspicion shifts toward someone close to the victim.
Episode 9
E9
Episode 9A tampered DNA report leads Dai Yu to question everything—including the victim’s family ties.
Episode 10
E10
Episode 10As betrayal unravels, Zheng Ming races to secure the one piece of evidence that could close the case.
Episode 11
E11
Episode 11Haunted by Xu Haishan’s past, Zheng Ming clashes with Dai Yu when an old case resurfaces.
Episode 12
E12
Episode 12A suspicious confession divides Dai Yu and Zheng Ming, deepening fractures within the team.
Episode 13
E13
Episode 13While dismantling an organ trafficking ring, Zheng Ming’s trauma resurfaces at the worst possible moment.
Episode 14
E14
Episode 14Dai Yu uncovers a fatal transplant secret, exposing a deadly conspiracy behind multiple murders.
Episode 15
E15
Episode 15A casino raid spirals out of control, and Dai Yu’s life hangs in the balance.
Episode 16
E16
Episode 16After Lin Zhixiao’s death, Dai Yu reveals Xu Haishan’s truth to Zheng Ming—reopening old wounds.
Episode 17
E17
Episode 17Zheng Ming’s secret investigation uncovers a disturbing video that points to Ye Xing.
Episode 18
E18
Episode 18Ye Xing offers a risky deal as Dai Yu and Zheng Ming investigate a decades-old trafficking case.
Episode 19
E19
Episode 19A hidden recording forces Ye Xing and Yang Yongchang into a dangerous confrontation.
Episode 20
E20
Episode 20Dai Yu reconstructs the night of the crime, dismantling Yang Yongchang’s airtight alibi.
Episode 21
E21
Episode 21When a blind woman is murdered, Zheng Ming and Dai Yu confront a killer who leaves numbered clues behind.
Episode 22
E22
Episode 22As Pang Beiyuan is arrested, Dai Yu suspects the truth behind the arson case is far from simple.
Episode 23
E23
Episode 23A mysterious toxin and a shocking link to Dai Yu’s father push the investigation closer to home.
Episode 24
E24
Episode 24After stealing Dai Yu’s father’s ashes, Pang Beiyuan demands a private meeting.
Episode 25
E25
Episode 25In a final standoff, Dai Yu confronts Pang Beiyuan as Zheng Ming is forced to make an impossible choice.