Something to hide your face

Exploration Stage: Greenhouse
From: Detective
Description: In retrospect, I should have caught the person who escaped from the Room of Doom properly! But then, I was desperate to save Martha's life... By the way, when I checked the area where the flowering moss was growing, I found a hiding place in the thickest part of the orange tree trunk. Look at this unusual mask that was in it.
Completed: Apparently, the wearer of this mask gets a new face created by the mirror particles. And that the face somehow looks familiar, even though it is completely unfamiliar. I see...it even has a voice modulator. That guest must have been wearing this to prevent Martha from finding out who he was.