The chamber offered a varied but manageable selection of potions, most of which he had made. The Veritaserum he recognised immediately. He stepped closer to the shelf and examined the good dozen of truth serum. At least from the outside, nothing was visible. He reached for a vial and turned it back and forth between his fingers. It still looked like water. Carefully, he pulled the cork out of the small container and held it under his nose. The smell was also unchanged.