Calvin walked along the streets of the Central Borough as he took out the inactive Notebook of Secrets That Will Destroy Your Life and started scribbling on its surface.
"Humanity's downfall was caused by a single man..."
A single sentence was left by his crude quill on the surface of the notebook— and in the very next moment. Despite Dandelion being inactive, the notebook was still able to apparently confirm the legitimacy of his words.
The word, "Verified" appeared next to the sentence before the sentence itself disappeared.
Now that I think about it... Since the Notebook of Secrets That Will Destroy Your Life can confirm the legitimacy of a sentence. I should be able to confirm if the thief was indeed a Doppelganger.
After all, the identity of the thief was still a secret and so long as it's a secret, the notebook should be able to confirm it.
Calvin thought to himself.