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 glas