cause for concern

Exploration Stage: Hat Salon
From: Mr. Black
Description: Even if this was really the guardian's plan, why did Zoe hear the music as soon as he mentioned the master? Doubtful. I think we need to verify if what she is saying is true. Bring me a tuning fork with super sensitivity.
Completed: This tuning fork was developed by the Security Service. It can detect where the sound vibrations are coming from... are they emanating from the designer himself? I knew I was right. She's hiding something!