The Detective

Tam, an impoverished private detective, is requested by a guy called Fatty to find a lady named Sum, whom he believes wants to kill him. He leaves Tam a portrait and a large amount of cash without giving any other details. Tam accepts the offer and

starts his investigation. Knowing that Sum, the lady in the picture, is a frequent visitor of a store where the picture was shot, Tam tries to get hints of her whereabouts from the storekeepers. He is told to find her through her mahjong playmates. Tam starts with Ming but when he arrives at Ming's home, he finds Ming hung in the living room. As Tam continues to search for other mahjong playmates of Sum, he finds each of them murdered every time he is about to contact them. He discovers a half-burned photo at one of the scenes. Tam realizes a pattern behind the deaths and decides to protect the next target of the invisible murderer. The photo is the only clue for Tam to solve the case.

Some flashing lights sequences or patterns may affect photosensitive viewers.