"Plenty," said Trumbull indignantly. "What do you think is needed in these cases? An encyclopedia? Whoever is looking for information, you simp, has it almost all to begin with. There's just some key point missing and that's what's needed.

"For instance, suppose we're back in World War II. Germany has rumors that something big is going on in the United States. A message arrives with only two words on it: 'atom bomb.' What more does Germany need? Sure, no atom bomb existed at the time, but any German with a high-school education would get the idea from those two words and any German physicist would get a damned good idea. Then a second message arrives saying: 'Oak Ridge, Tenn.' That would be a total of twenty individual letters in the two messages taken together and it could have changed the history of the world."

"You mean this guy, Ottiwell, is putting across information like that?" demanded Gonzalo, in awe.

"No! I told you he wasn't," said Trumbull, annoyed. "He isn't important at all in that way. Do you think I would be talking to all of you about it if he were? It's just that the modus operandi could be used for that as well as for anything else, and that's why we have to break it. Besides, there's my reputation. I say he's using the match-books and I can't show how. You think I like that?"

Gonzalo said, "Maybe there's secret writing on the inside of the matchbooks?"

"We tested for that routinely, but not a chance. If that's it, why bother using matchbooks? It could be done in ordinary letters and attract a lot less attention. It's a matter of psychology. If Ottiwell is going to use match-books, he's going to use a system that can be used only on matchbooks, and that means he's using only the messages that are on them already-somehow."

Klein interrupted. "Imagine starting all this by mentioning yesterday's lunch. Do you have, maybe, a list of matchbooks he sent off? If you have a photostat, we could all look at it-"

"And work out the code that I couldn't? Right?" said Trumbull. "You know ever since Conan Doyle pitted Sherlock Holmes against the Scotland Yard bunglers, there seems to be a notion going around that the professional can't do anything. I assure you, if I can't do it-"

Avalon said, "Well, now, how about Henry?"

Henry, who had been listening gravely, with a look of interest on his unlined, sixtyish face, smiled briefly and shook his head.

But a look of deep thought came over Trumbull's face. "Henry," he said. "I forgot about Henry. You're right, Jeff. He's the smartest man here, which would ordinarily be a compliment, if you weren't all a pack of prize imbeciles.

"Henry," he said, "you're the honest man. You can see the dishonesty of the world without having it blurred by your own larcenous yearnings. Do you agree with me? Do you think this Ottiwell, if he were going to engage in this kind of work, would do so only by using his matchbooks in a way that would make them uniquely useful, or not?"

"As a matter of fact, Mr. Trumbull," said Henry, collecting the dishes that remained, "I do. I agree with you."

Trumbull smiled. "Here we have the word of a man who knows what he's talking about."

"Because he agrees with you," said Rubin.

"I don't entirely agree with Mr. Trumbull, to be sure," said Henry.

"Aha," said Rubin. "Now what do you think, Tom?"

"What I always think," said Trumbull. "That your silence is the best part of you."

"May I-make a little speech?" said Henry. "Wait a while," said Rubin. "I'm still the host, and I'm taking over. I decide on procedures, and I decide that Henry makes a little speech and that the rest of us all keep quiet except to answer Henry's questions or to ask questions of our own that are right to the point. I have in mind particularly Tom-Tom the drumbeat as a candidate for quiet."

"Thank you, Mr. Rubin," said Henry. "I listen to you gentlemen, on the occasion of all your monthly meetings, with the greatest interest. It is obvious to me that all of you get enormous pleasure, in an innocent way, out of flailing at each other with words. You can't very well flail at a guest, however, so you all have a tendency to ignore the guest and to fail to listen to him when he speaks." "Have we done that?" asked Avalon. "Yes, and, it seems to me, Mr. Avalon, you may have missed a most important point in consequence. Since it is not my place to talk-ordinarily-I listen to all of you impartially, the guest included, and I seem to have heard what the rest of you did not. May I have permission, Mr. Rubin, to ask Mr. Klein a few questions? The answers may prove to be of no help, but there is a small chance-" "Well, sure," said Rubin. "He should be grilled anyway. Go ahead."

"It wouldn't be a grilling," objected Henry softly. "Mr.

Klein?"

"Yes, Henry," said Klein, a rather pleased flush crossing his face at being the undoubted center of attention.

"It's just this, Mr. Klein. When you began to tell, rather briefly, the story of your lunch yesterday, you said something like-and I can't repeat the exact words either -you thought he was crazy, but he made everything sound so interesting that by the time he was through, you decided to start a collection of matchbooks of your own."

"That's right," said Klein, nodding. "Sort of silly, I suppose. I certainly wouldn't do anything at all like his

deal. I don't mean the spying; I mean this huge collection of his-"

"Yes," said Henry, "but the impression I got was that you were driven to an impulse of collecting right on the spot. Did you by any chance pick up a Cock and Bull matchbook at the conclusion of the lunch?"

"That's right," said Klein. "It's a little embarrassing, now that I think of it, but I did."

"From which table, sir?"

"From our own."

"You mean you took the matchbook you had been holding and had passed on to Ottiwell? It was put back on the table eventually and you picked it up?"

"Yes," said Klein, suddenly defensive. "Nothing wrong with that, is there? They're there for the diners, aren't they?"

"Absolutely, sir. We have matchbooks on this table, which you're all welcome to. But, Mr. Klein, what did you do with the matchbook when you picked it up?"

Klein thought a bit. "I don't know. It's hard to remember. I put it in my jacket pocket, or in my coat pocket after we got our overcoats out of hock."

"Did you do anything with it once you got home?"

"No, as a matter of fact. I forgot all about it. All this matchbook bit just passed out of my head till Manny Rubin mentioned about his wife collecting bulls."

"You're not wearing the same jacket now, are you?"

"No. But I'm wearing the same coat."

"Would you look in the coat pocket and see if you have the matchbook there?"

Klein vanished into the private cloakroom used by the Black Widowers on the occasion of their meetings.

"What are you getting at, Henry?" asked Trumbull.

"Probably nothing," said Henry. "I'm playing a long chance, and we've already had one this evening."

"Which is that?"

"That Mr. Klein had lunch with a man who turns out to be someone you've been stalking, and that you find out about it the day after. Asking for two chances like that is a bit much, perhaps."

"Here it is," said Klein joyously, returning with a small object held high. "I've got it."

He tossed it on the table and everyone rose to look at it. It said "Cock and Bull" upon it in semi-archaic lettering, and there was the small picture of a bull's head, with a rooster perched on one horn. Gonzalo reached for it.

"If you please, Mr. Gonzalo," said Henry. "I don't think anyone ought to touch it yet… Mr. Klein, this is the matchbook that was at your table, the one you used to light a cigarette and which Mr. Ottiwell then used to demonstrate some points about the place where the friction strip is located and so on?"