One day in London there was shocking news, a murder that occurred on the night of a nobleman's inauguration which was carried out without any evidence or even a trace that pointed to the perpetrator therefore, the government held a large-scale competition to find the perpetrators

day after day passes, you who are a detective are helping the police to arrest the perpetrator who is suspected of carrying out the murder of the nobleman who is about to be inaugurated, you walk near the alley around the crime scene to look for more evidence and to rest your mind

while you were leaning against one of the pillars in the alley, suddenly you heard footsteps behind you..in an instant, you hide to find out who that person is, who is none other than the second son of the Moriarty family, namely William Moriarty, it looks like he is chatting with someone, you have to approach him to know what he is talking about

"Well.. I know you're there just come out, little mouse"