Holden held up a tiny transparent vial filled with a black liquid. The eerie part was that the liquid seemed to writhe and move as if it were alive. Even Felix felt uneasy looking at it, let alone Holden, who was just an ordinary person.

"It should be," Felix said, trying to reassure him, though he was not entirely sure himself. "Let's take it up and show your dad first."

Just as Holden was about to put the vial away, he paused. "Wait a second, Mr. Zeller. Did they even have transparent glass like this in the Bronze Age?"

Felix frowned. "I'm pretty sure they didn't."

To modern eyes, a transparent vial might seem ordinary. Yet, over 2000 years ago, such a thing would have been impossible in the Bronze Age.

Felix continued, "Don't overthink it. Francis wasn't an ordinary man, and his creations defy logic. Besides, the text on the wall said to throw the vial away after drinking the liquid."

Holden did not know that his question had sparked Felix's interest in the vial. If Franci