The mineralogist fits a key into a tiny, almost invisible hole on the bottom; when it turns, two more tiny keyholes open on the opposite side. The assistant director inserts matching keys into those holes; they unlock what looks like five different shafts. Three overlapping cylinder locks, each dependent on the next. “Ingenious,” whispers von Rumpel. The entire box falls gently open. Inside sits a small felt bag. He says, “Open it.”

