葉璇
One day, the Brain trails the client to find the Woman (Michelle Ye) picking up the payment for the job at a parking garage. However, only Fatty and the Brain should have known about the pick-up. The Woman explains to the Brain that Fatty had told her about the client, but the Brain, suspecting her betrayal, kills her and takes the money. After he leaves, as he is walking on the sidewalk, the client (the son) falls from the roof of the same building and is dead. The Brain develops further suspicion of the insurance agent, who he can see talking on the phone and later hear him talking about the client on the phone in his flat.