43 minSeason 1 • Episode 20
LatestPolicewoman Yiu Chi-yue is a natural born Highly Sensitive Person. She brings chocolate, salty lemon water and a brain with an “on-off switch” with her whenever she investigates cases. Her senses are heightened when she drinks salty lemon water that arouses her keen awareness of clues at the crime scene. Through touching the dead body, gathering evidence and her senses, she empathizes with the victim and reconstructs the sequence of events. Since Chi-yue met restaurant boss Wong Mik-kei, the duo are no longer “spectators”. Perpetrators at large are killed one after another. Chi-yue covertly challenges some serial killer on several occasions, and their true identity is gradually uncovered. Chi-yue realizes the two of them have conflicting standpoints even though they are like-minded, causing her to face the conundrum of making life choices. In the meantime, Mik-hei astonishingly makes some decision for her.
Acting
Venus Wong's physicality sells every sensory overload.
Cinematography
HK neon and rain turned into psychological texture.
Writing
The salty lemon water as literal plot device? Unhinged genius.
Creators
Lee Man Son, Yip Chun Fai
Trivia, insights & behind the scenes
Hong Kong's 2023 TVB dramas increasingly blend food culture with genre—here, salty lemon (鹹檸七) becomes both comfort and weapon.
The title's double meaning—'spectator' as bystander AND observer of suffering—collapses when Chi-yue literally feels victims' final moments.
HK
