“Meyer?” Quarry leaned forward, interjecting himself into the conversation. “German? A Jew? I’ve heard of a fellow of that name—traveling coin-dealer. Think he works in France. Very good disguise for a secret agent, that—going about to big houses, carrying a pack, what?”

“There you have me, sir.” Bowles seemed mildly annoyed by the admission. “There was no such person at Lavender House, nor was any such known by that name. It does seem most suspicious, though, given the circumstances.”

“Oh, rather,” Quarry said, with a tinge of sarcasm. “So, then. What d’you suggest we do?”

Bowles gave Quarry a cold look.

“It is of the utmost importance that we discover the man to whom O’Connell intended to sell his secrets, sir. It seems clear that this was a crime of impulse, rather than deliberate espionage—no one could have known that the requisitions would be exposed and unattended.”

Quarry gave a grunt of agreement, and sat back, arms folded across his chest.

“Aye, so?”

“Having recognized the value of the information, though, and removed the documents, the thief—call him O’Connell, for convenience—would then be faced with the necessity of finding someone to pay for them.”

Bowles pulled several sheets of rough foolscap from the stack before him, and spread them out. They were covered with a round scrawl, done in pencil, and sufficiently illegible that Grey could make out only the occasional word, read upside down.

“These are the reports that Jack Byrd supplied to us through Mr. Trevelyan,” Bowles said, dealing the sheets upon the table one by one. “He describes O’Connell’s movements, and notes the appearance—and often the name—of each person with whom he observed the Sergeant conversing. Agents of this office”—Grey noticed that he didn’t specify which office—“have located and identified most of these persons. There were several among them who do indeed have tenuous connexions with foreign interests—but none who would themselves be able to accomplish a contract of such magnitude.”

“O’Connell was looking for a purchaser,” Grey summarized. “Perhaps one of these small fish gave him the name of this Meyer for whom he was searching?”

Bowles inclined his round little head an inch in Grey’s direction.

“That was my assumption as well, Major,” he said politely. “‘Small fish.’ A very picturesque and appropriate image, if I may say so. And this Meyer may well be the shark in our sea of intrigue.”

Grey caught a brief glimpse from the corner of his eye of Harry making faces, and coughed, turning a bit to lead Bowles’s gaze in his own direction.

“Your . . . um . . . source, then—could he not discover any such person, if the suspect had an association with Lavender House?”