C516 Guessing the Trail

"He had been talking to himself in the secret chamber, and he had a strange feeling about him."

"From what he's saying to himself."

"He seemed to have made a fake necklace and hid it in the safe in the basement."

"As for the real one, he secretly swapped it out and put it in his secret chamber."

"Then, he said that a group of idiots stole the fake necklace."

"In other words