“Newton is gobsmacked; Waterhouse nods as if he suspected this all along. Perhaps Waterhouse is cleverer than they give him credit for,” said Jack.

“I knew something was going on; else I could not make sense of recent happenings,” said Daniel. “But I did not expect this.”

“Can you make sense of it now?”

“No,” Daniel said, and glanced over at Isaac, who for once was lagging pitiably behind; his bulging eyes strayed to the hilt of Shaftoe’s sword, lingered for a moment, then began to sweep the walls for exits.

“The entire month’s work: Bedlam, the Main-Topp, and the Stake-out: why? What was the point?” Daniel asked.

“Ask de Gex,” Jack said. “I had less than you might suppose to do with that tedious poppet-show. Through the most of it I was an amused spectator only. And an enraged, when I spied him swimming away, and knew he had survived.”

“So it is true that you and he are at odds.”

“Have ever been,” Jack corrected him, “though he did not wot it, I think, until your nice bit of jugglery went off in his coach, and set him on fire. Now he seems at last to’ve got it through his head that I am not his friend.”

“Because you engineered a double-cross,” Daniel said.

“The whole time it has been my misfortune to know the man, he has turned minutes into hours, and hours into days, with his jabbering about Alchemy. The last few months-since he learned that you had been summoned home from Boston-it has been worse than ever. As he has made me suffer so much with it, I reckoned it mere justice to use it to kill him.”

The mention of Alchemy had brought Isaac composure, and somehow made him willing to take part in the conversation. (This struck Daniel as an extremely familiar pattern; for when had Isaac ever been sociable, save when the company was Alchemists, and the topic Alchemy? Not for nothing did they call it the Esoteric Brotherhood. It was the only way he had ever made new acquaintances, with the sole exception of Daniel; it was his entire system for getting along with people, and that was its true magic.) “If ever was a moment, and a place, to ask a grossly indelicate question, ’twere now, and here,” Isaac began.

“Let her rip, Ike,” said Jack.

“If de Gex has been your hated foe for so long, why did you not kill him long ago? For unless I am mistaken this would not be difficult for one such as you to arrange.”

“You who have slaughtered so many at Tyburn may suppose it is an easy thing to do, and may phant’sy that I have kllled as many as Tamerlane,” Jack returned, “but killing a wretch through the machinery of the Law is easy, compared with how it must be accomplished in my world, when the victim-to-be is Father Confessor to the Queen of France.”

“So in de Gex’s obsession with Alchemy you perceived a way to get rid of him indirectly,” Daniel said.

Jack sighed. “It almost worked,” he said. “And may work yet, through some convolution or other. But now is a perilous time, which is why we need to set matters straight, and get it done smartly.”

“I cannot fathom your arrogance in supposing that, after all you have done, matters may simply be set straight!” Isaac exclaimed.

“Maybe you had better square that, guv, with the Marquis of Ravenscar,” Jack returned. “If he’s willing to give freedom and a farm in Carolina to a varlet who’ll merely give information leading to my capture, why, what would he offer me, if he were in this room? What would you give me to have the former contents of the Pyx delivered to your house in St. Martin’s this evening?”

Daniel’s fear of being locked in a dungeon of Newgate with London’s most infamous criminal had suddenly been shoved out of his mind by fear of what Roger would have to say when he learned just how utterly Daniel had bungled the negotiation.

In his distraction he was overtaken by Isaac, who, after a slow start, had now got up to full speed. “Supposing that there is anything to that offer,” Isaac said, “how can you reconcile it with your duties as a paid agent of the King of France?”

“Ah, good, very important,” Jack said. “Leroy is a far-sighted chap. Deserves all that’s been said of him. Developed a scheme, in the respite between the wars, to win the next one by destroying the money of England. Excellent idea. Needed someone to do it for him. Haply I came along. I knew London. Knew of metals and coining. Had managerial experience, viz. Bonanza, Cairo, and other exploits. Was lacking in gentlemanly polish, though, and was of extremely dubious loyalty. How then to make good these deficits, that my salutary qualities might be put to work? De Gex. He knew me already. Is as noble as they come. Working in concert with me in London, he could get invited to salons-never my strong suit. He’d seen me make a fool of myself, more than once, over one Eliza-yes, Dr. Waterhouse, I spoke her name aloud-and knew she was the ticket to securing my loyalty. For by certain twists wrought on her by that perverted bitch Fortune, Eliza had married the young Duke of Arcachon, bore his children, and habitually spent half her time in France among the nobility of that land, who are prolific murderers of their own siblings, parents, et cetera. To poison her, or worse, should be as easy, for de Gex, as yanking out a troublesome nose-hair. Thus was the deal struck: Jack would to London to carry out the destruction of the vaunted Pound Sterling under the supervision of his tiresome overseer, de Gex, and in exchange, Eliza would be left alone.

“What a difference twelve years makes! The war is over, my friends, and France won. Oh, England wrung some scraps from them, but make no mistake, that is a Bourbon on Spain’s throne. Leroy would still see Jamie the Rover on the throne of Great Britain, but that is not as important to him, now, as was securing the Spanish Empire in 1701! This undertaking I have toiled at, of undermining the currency, has taken on a new cast. Before, the objective was to bring about a crash in this country’s foreign trade-its only means of paying for war. Now, it is a petty matter: to create a scandal, and get the rich men of the City up in arms against the Whigs. Don’t look so indignant, Ike, you know perfectly well this is what I’ve been up to. I am in a position to accomplish this now, or as soon as Bolingbroke can arrange a Trial of the Pyx. Shall I? Shall I betray my country to France? Perhaps! For there is much to hate about this place. Do I feel strongly moved? No longer. For Eliza’s a widow. Her French children are grown up, dividing their time ’tween Paris and Arcachon. Her German boy is with her all the time. It has been two years since she graced the soil of La France. In sum it is a much more difficult matter, now, for de Gex to bring about her death-and it shall become more difficult yet, if I bring about his.”

“Is this going to conclude with you asking for something?” Daniel asked.

“All I seek is a dignified retirement from the brawls of the World,” Jack said, “though, since you mentioned the farm in Carolina, I think I should like to give that to my sons. They’ll only get into scrapes if they stay in London.”

“Oh yes,” Daniel said, “it is quite unthinkable that anyone should get into trouble in America.”

“Different trouble is all I seek for my lads,” Jack said. “Wholesome trouble out in the fresh air.”