Marvin is dead.
This was not a "small" matter like the previous deaths of over thirty Slaves.
Both Marvin's responsibilities and his identity meant that his death was a very troublesome matter for the Training Camp.
Firstly, regarding his identity: as a bloodline of the Glenbagen Family, Marvin dying in the Training Camp was essentially equivalent to him dying in his own home, and by murder at that.
This was undoubtedly a very humiliating incident.
As the highest administrator of the entire Training Camp, the Instructor would at least be charged with "negligent supervision and security oversight."
More seriously, he might even be framed for "killing Marvin."
Therefore, he had to prove to his superiors that he was not involved in the matter.
Secondly, regarding his responsibilities: Marvin was the Training Camp's Potion Master, and almost all of the Training Camp's potions came from him.
Losing Marvin meant the Training Camp temporarily lost its source of potions.
