The murderer in the first case of No. 1 Royal Court 5

The man downstairs. "Emperor No. 5" is a suspense crime drama in Hong Kong. The first case tells the story of a woman who was killed alone at home late at night. The surveillance at home and nearby could not find any criminal activity. When the case was finally solved, she was caught The murderer is the man downstairs. He secretly sneaked into the woman's home at night, fed her sleeping pills, tied a rope around her neck, returned downstairs, pulled the rope down, and strangled the woman to death. The method of committing the crime was extremely cruel.