A brutal family murder introduces forensic expert Pok and inspector Yau. As they search for the killer, rookie officer Ting witnesses Pok's remarkable crime-solving skills.

A murder investigation takes a tragic turn when Pok's wife is diagnosed with liver cancer. Meanwhile, Sum discovers evidence that could expose the real killer.

Yau solves a murder with Pok's help while dealing with a painful breakup. Impressed by Ting's sharp instincts, Pok offers her a job on his team.

Pok clashes with his father while an old romance resurfaces. Elsewhere, Sum faces accusations of sexual harassment after trying to help a troubled teenager.

Pok and Yau investigate Black Yiu and uncover a deeper connection to the crime. Meanwhile, Sum grows closer to Tung and learns more about Yiu's final wishes.

When Yuk is poisoned, forensic evidence links the case to Yiu's death. Suspicion falls on Pok and Pui, forcing Yau to question them both.

Yuk awakens and reveals what she knows about the poisoning. Pok also confronts his doubts about Tung, while Pui tries to repair her relationship with him.

Man denies killing Wai, but evidence reveals that her mother fought with the victim. Meanwhile, Yau's team gets an unwanted new colleague whose behavior quickly causes trouble.

The truth behind Wai's murder finally emerges, but Kong's night out ends badly when he is drugged and robbed. Sum tries to cover it up, only to face Yau's fury.

Pok suspects the unidentified victim may be Yung Wai. New evidence leads police to her relatives, while Pok urges Tung to leave his difficult job and enjoy retirement.

Police uncover the truth behind Yung Wai's disappearance and learn that her identity has been concealed. As the investigation closes in, Yung is forced to reveal a painful secret.

A young woman's body is discovered after heavy rain destroys crucial evidence. As Yau investigates, Cheung's strange behavior draws attention and puts him on a collision course with Hiu-Tung.

Cheung reveals how Hiu-Tung destroyed his life and asks to pursue him as a suspected serial offender. Yau turns to Pok for help uncovering the truth.

A brutal attack leaves Cheung fighting for his life as Yau and the police confront Hiu-Tung. Meanwhile, Woon struggles with her divorce and considers leaving the force.

After Chung's antiques are revealed to be fake, Pok investigates the burglary. Meanwhile, Ting challenges Sum to a spicy-food contest as Chung plots to pass his bad luck to Lung.

Lung is accused of murder, but Pok finds evidence proving his innocence. As the investigation continues, Pok uncovers a tangled relationship involving Chung, a movie star and a feng shui master.

Mi finally reveals the truth behind Chung's actions. As Yau falls ill, Pok takes care of her, leaving Woon and Ting questioning his complicated love life.

After a disturbing night, Pok discovers he was drugged and urges the police to investigate the pub. Meanwhile, Kong returns to find Ting has moved on.

DNA evidence reveals a shocking connection to the rape case, while Yau closes in on the real culprit. Elsewhere, Ho's life spirals out of control after a series of scandals.

Vivian's death is ruled a possible suicide, but forensic evidence suggests otherwise. As Sum investigates, Pok tests Woon's judgment and sends her back to work the case.

Yau investigates a suspicious death involving a mother and son, while Man adjusts to her new job. Pok also struggles with his complicated feelings for Yau and Woon.

Pok believes a murder scene was staged like one of Sum's novels. As Yau investigates a suspicious colleague, Sum and Man become involved with a sick neighbor whose sudden death raises questions.

A failed police operation leaves Yau under fire, while Pok spots a suspicious woman in footage of the chaos. Meanwhile, Man's confession of love ends in rejection.

As the forensic evidence clears Man, Pok suspects Tracy may be connected to the murder. When Ting discovers something unexpected at her home, the investigation takes a new turn.

Pok is kidnapped and trapped in a deadly game designed to make his friends watch him die. As the police race to find him, his captor sends disturbing videos of his suffering.