Police Story

An earnest, impulsive undercover police sergeant who pushes beyond standard procedures to nail Chu Tao. He relentlessly pursues the target, often clashing with superiors but refusing to back down. After a failed operation and a surrounding frame, he fights to clear his name while keeping civilians safe.

Chu Tao's secretary who becomes a key witness in the case. She is pressured by Chu Tao's gang, initially resists protection, and then records a confession that becomes central to the prosecution. Her actions and eventual absence at the trial create a battle over the truth.

Ka-Kui's girlfriend who confronts jealousy when Salina enters the picture. She provides emotional support during the investigation and becomes involved in the unfolding events, underscoring the personal stakes behind the police work.

A crafty crime lord who masterminds the operation against Ka-Kui and uses his influence to manipulate others. He escapes bail, orchestrates threats to Salina, and relies on a corrupt plan to frame Ka-Kui for murder.

A police inspector who is revealed to be collaborating with Chu Tao. He helps set traps to eliminate Ka-Kui and to frame him for crime, highlighting internal corruption and the fragility of trust within the force.

A high-ranking police official who reprimands Ka-Kui to manage the public image of the force. He represents institutional pressure and the need to present a composed front to the media, even when the truth is more complex.

The prosecuting attorney whose case against Chu Tao hinges on Salina's testimony. The trial falters due to Salina's absence and tampering with evidence, illustrating the fragile chain of evidence in high-stakes crime cases.