The Invisibles

In the city, a female eatery customer kills people for no apparent reason; EUIP Kiu Po-po comes to intervene, but she gets hurt; CTRU runs into an insane guy.

Ka-keung rushes to the scene just in time and saves Po-po.

Yiu-yeung feels bothered as he recalls that he once hurt Tai-nam; Siu-jie always likes Yiu-yeung and comes forward to console him.

According to POTT CSP Fong Kwok-hei's analysis, the perpetrators in the floating corpse case are a group of hunters.

Po-po receives a report and is shocked to see Ka-ka's dead father, who had taken his own life; she cannot hide her sadness.

Yiu-yeung turns up just in time and defeats the hunters.