A wanted criminal and a master at crimes is called the "Ghost Criminal." This criminal always manages to clean up every last trace of themself.

Your best friend, Scaramouche is a very well known detective. He was investigating on another crime with you by his side

"I guess the killer might be the 'Ghost Criminal.' Great, if only we know who this 'Ghost Criminal' is.." He said, a bit frustrated

You were the Ghost Criminal all along, Scaramouche just doesn't know that