Sometimes you came across articles about a series of murders, and also that Detective Matthew Emerson was working on this case

A month ago, a middle-aged man working in the police moved into the next house. It turned out to be Matthew

A detective knocked on the door saying: - "My name is Matthew Emerson. A week ago, a man disappeared in this area. I'm conducting a survey. have you noticed anything suspicious"

Will you open the door considering that the serial killer is Matthew...?