"I don't see why that would have been any easier to poison than the food," was my objection. "Everyone was looking."
"Very simple. The food was brought in quite late. Besides, it was dished out by the caterer before the eyes of forty or fifty people or more and there was no telling which plate would go to Werner's place. The drinks were poured last of all. I remember seeing the bubbles rise and wondering whether they would register at the distance."
Kennedy did not look at me. "Did it ever occur to you," he went on, casually, "that the glasses were all set out empty at the various places long before, and that there might easily have been a few drops of something, if it were colorless, placed in the bottom of Werner's glass, with scarcely a chance of its being discovered, especially by a man who had so much on his mind at the time as Werner had? He must have indicated where he would sit when he arranged the camera stands and the location of the tables."
I had not thought of that.
Kennedy frowned. "If only I could have located more of that broken glass!" As he faced me I could read his disappointment. "Walter, I've made a most careful search of his chair and the table and everything about the space where he dropped. The poison must have been in the wine, but there's not a tiny sliver of that glass left, nothing but a thousand bits ground into the canvas, too small to hold even a drop of the liquid. Just think, a dried stain of the wine, no matter how tiny, might have served me in a chemical analysis."
Very suddenly there was a low exclamation from Mackay. "Look! Quick!
Some one must have kicked it way over here!"
Fully twenty feet from Werner's place in the glare of the lights was the hollow stem of a champagne glass, its base intact save for a narrow segment. In the stem still were a couple of drops of the wine, as if in a bulb or tube.
"Can it be the director's glass?" Mackay asked, handing it to Kennedy.
Kennedy slipped it into his pocket, fussing with his handkerchief so that the precious contents would not drip out. "I think so. I doubt whether any other glass was broken. Verify it quickly."
The police were entering now with Manton. Following them was the physician. Mackay and I ascertained readily that no other glass had been shattered, while Kennedy searched the floor for possible signs that the stem was part of a glass broken where we had found it. Unquestionably we had a sample of the actual wine quaffed by the unfortunate Werner. Elated we strolled to a corner so as to give the police full charge.