Secret Communication

Exploration Stage: Octopus Citadel
From: Mr. Black
Description: I followed Violet, who had just now returned through the back door to the Sheriff's Department headquarters. Before returning to her own office, she looked over one note, lit it on fire, and then threw it in the trash. She managed to put out the fire, but it was blown away by the wind and went somewhere else. Would you look for it?
Completed: The note must have been wedged between the floorboards! Let's find out why Violet read this and immediately threw it away. Oh dear, it looks like all the letters have been burned... all that's left is the snake symbol. That's the mark of the Order, right? I mean, the note had a message from them!