"Sure thing!" The director took us to the archives to find the case files. Unfortunately, it wasn’t as detailed as the one in my hand.

In the copy the Blade Master sent me, the name of the suspect had been removed. However, judging by the length, the suspect had a three-character name. [1] Arguably, as long as words were written on the paper, shallow traces would be left behind so the words could be reproduced by pencil shading. However, the person who destroyed the evidence was so careful he ironed every piece of paper, which reinforced my suspicions that Grandpa did it!

The last pages of the file in the county were missing, torn off as suggested by the jagged edges. The director wasn’t clear about this.

I glanced at the officers involved in the case, memorizing the names before returning the file. The director offered...