Originally, these documents had recorded all the dwarf's actions over the past two days, including how he murdered the Prime Minister's only son in the street. Everything was listed clearly and explicitly, with fingerprints from eyewitnesses next to it.
"Where did all these come from? Fourth Prince, you didn't send someone to surveil me, did you?"
Having every move of his depicted so vividly, the dwarf was shocked. How could he have not noticed at all? It was terrifying.
"If you don't want anyone to know, don't do it at all."
"Did you really send someone to watch me?"
The dwarf got a bit unhappy. He joined his force to win wealth and honor, not to be surveilled. Since the Fourth Prince had such a capable man under him, able to watch him for so many days without his noticing, why bother inviting him to the Capital at all?