Several days later, Aiden finally confirmed his suspicions.
Over the course of those days, he repeatedly used the "Law" authority to interrogate new prisoners and new staff members. Astonishingly, he really did ferret out a follower of the Blood Moon Cult.
And it was indeed someone who had applied to work in the canteen's kitchen.
Tony, who was responsible for the invisible investigation, found a bottle of something that looked like pepper on this person, who admitted under interrogation that it was the poison he had used to commit the poisoning.
Aiden immediately sent this substance to Meiruki for testing.
"Looking at the reaction effect, it should be a poison extracted from lilies," Meiruki eventually replied, "but judging from the reaction time, I fear this is not any known toxin."
"What's with this strange statement?" Aiden pressed for an explanation.