door to bow them on their way, but I stayed where I was. Now the meeting would get down to business.
“Now, Doctor,” Moro said, leaning back. “Your message said you would introduce us to the man we have been seeking. I take this to mean that you have identified the notorious Algol?”
The Maestro beamed, bunching cheeks and very nearly showing his teeth. “Identified and delivered, Your Serenity. Inquisitor Gritti has him locked up already.”
Eyes turned to Inquisitor Gritti, who alone looked as if he had not enjoyed the meal. “We have detained a man named Francesco Guarini, sire. He is charged with using violence against the vizio, who very nearly bled to death. He-”
“-would have bled to death, had Alfeo not known what to do,” my master said.
The doge grunted annoyance at the interruption. “Sounds like Zeno. Continue, Inquisitor.”
“We still have no evidence,” Gritti said, “that Guarini and Algol are one and the same. Nostradamus refuses to justify his claims.”
“It is fairly obvious.” Taking silence as an invitation to lecture, the Maestro laid his forearms on the table and put his hands together, fingertip to fingertip. “Espionage, if I may be permitted to belabor the obvious, is a form of theft. It takes information belonging to A and transfers it to the buyer, whom we may call Z. Your Excellencies have not entrusted me with Z ’s identity, although you must know it because your own agents stole the information back again, albeit still in encoded form and therefore not identifiable with complete confidence until I broke its cipher for you. One report I saw was dated so recently that Z cannot be located far away, in say Paris or Constantinople. Most likely Z is an ambassador right here in Venice, and I shall assume for the sake of this discussion that he can be found in the Spanish Embassy. Which embassy does not matter, because my point is that espionage requires middlemen. It would be quite impossible for a senior magistrate to stroll along to any embassy without his own government knowing it.”
The audience shifted uneasily at this allegation that the Ten spied upon its own, but none of them wasted breath to deny it.
“The same would be true, messere, if he sent his gondolier with a letter-very soon the Three would invite him in for a chat. It would be true also of the illustrious citizens who serve the Republic in high office and are privy to its secrets. So we must postulate B, who steals or buys the information from A and then delivers it, most likely to another middleman, C, who in turn passes it to D, and so on until it reaches Z. Of course Z probably hides behind one of his own subordinates, whom we may call X. Communication is the weak point in any espionage system, as you well know. Even on Thursday, when you entrusted me with the task of unmasking Algol, I was sure that the person I would catch would turn out to be a middleman, not a traitor within the government. The next day I learned that he was an amateur, not-”
“How?” barked Gritti.
The Maestro turned to him with an expression of bland surprise. “From the cipher, Excellency. He was using a most sophisticated method of enciphering-more subtle, I am certain, than the system used by La Serenissima herself-and yet he was using it very stupidly. A key only five letters long is absurd! Instead of VIRTU, he should have used something much longer: LA SERENISSIMA, or the paternoster, or a verse from Dante. He should certainly have employed a different key for each dispatch. Beginning every dispatch with a date is another incredible incompetence, a gift to the code breaker, but all ciphers are eventually betrayed by human stupidity.
“So B had to be an amateur, a local whom X had enlisted and taught to encipher. Fortunately, in spite of B ’s hamfisted, incompetent enciphering, the product was good enough to baffle most people.” That was a nice dig at Circospetto and his minions. “As long as B continued to supply valuable information, X was content not to interrupt the flow. An alternative possibility was that B had taught himself the rudiments of enciphering by reading a book, and I admit that I found this theory attractive because Alfeo had located a great library associated with a certain distinguished magistrate, but I discarded that as improbable as soon as I identified B as Danese Dolfin.”
“What?” The wintery blast came from Zuanbattista Sanudo. “You dare suggest that I gave state secrets to that slimy little thief? Or that my son did?”
“No, messer, I certainly do not.” The Maestro shrugged. “It is a complex story, which will be best understood if told in a logical sequence. I may…?” He accepted Zuanbattista’s silent glare as assent. “The next link in the chain from B to X was Francesco Guarini, of course, but I do not know which of them masterminded their squalid conspiracy. I suspect Dolfin, but Guarini may enlighten you, messere, when he is motivated to explain.”
I shivered. Gritti was showing his teeth, biding his time. The Maestro might talk all he wanted, but he was not going to escape the charge of necromancy.
“Dolfin’s murder,” Nostradamus said, “was in a sense a lucky break for me as investigator, and for the Republic itself, although the Algol espionage was already ended before that. The murder was bizarre. Why was the corpse brought to Ca’ Barbolano and left in the watergate with the impaling sword still in place? Why not just drop it in a canal? We have many murders in Venice, but few are deliberately advertised as this one was. Why was he murdered at all? One obvious motive, if sier Zuanbattista will forgive my even mentioning it to dismiss it, is that someone in his family resented the way Dolfin had inveigled himself in by seducing madonna Grazia. But the last thing Ca’ Sanudo would want would be publicity, so the grotesque spectacle made of the corpse was not the work of any family member.”
“I am so relieved to hear that!” Zuanbattista growled.
“Nor could his death be a random slaying during a robbery,” the Maestro continued unabashed, “because the killer would not have known to bring him here, to Ca’ Barbolano. It could not be an effort to distract me from investigating the espionage case by involving me in murder, as I speculated at first, because publicity is the last thing a spy ever wants. For the same reason I do not believe that Dolfin was slain to silence him. Besides, the espionage was ended. Dolfin not only would not continue his treason, he could not, as I shall demonstrate. So why did his killer make an exhibition of him, a public scandal, the talk of the town?”
“Enough of this!” snapped the doge. “You are supposed to be telling us how you identified Guarini as the spy. And Dolfin, for that matter. Give us the facts and stop boasting how clever you are.”
“Sire, forgive me!” the Maestro said, bowing in his seat. “The facts? The salient facts? The lightning flash that illuminates the truth? Yesterday Danese Dolfin’s body was found in our watergate. A week ago yesterday, sier Zuanbattista and his noble lady came to our house in search of their daughter. One of the Algol documents you let me examine was dated the eleventh of August and another the fifteenth of September!”
Silence.
He looked around with the maddening pretense of puzzled innocence he adopts sometimes.
“Fridays,” he explained patiently. “Last Friday night, Dolfin was murdered. The Friday before that he climbed over the wall of Ca’ Sanudo, from which he had been expelled a few days earlier. Every Friday B wrote his report and met with C, who was either his letter box or his handler, in the argot of the espionage world, depending on which of them was senior. To abduct Grazia, Dolfin used a ladder. A week later Dolfin’s corpse was brought to Ca’ Barbolano’s watergate, which has no true land access. Does this not scream at you that C must be a gondolier? In Venice, what else could he be? Only trained gondoliers can handle our narrow, unstable boats, and what gondolier would transport a ladder by night for a stranger? Or convey a corpse?
“Undoubtedly X would have ordered B and C to limit their meetings to their weekly rendezvous and avoid all other contact. They broke this rule once and thereby brought about their downfall, as I shall reveal. When Guarini arrived at the rendezvous near Ca’ Sanudo on Friday the fifteenth of September, Dolfin explained that the golden goose had turned broody-he had been evicted from Ca’ Sanudo and cut off from his source of information. He proposed a backup plan. He would carry off Grazia and marry her, gambling that her parents would eventually bow to the inevitable and accept the serpent back into their garden. Guarini agreed, took Dolfin to fetch his ladder, and then transported him and his victim to some nest where they spent the night. Possibly madonna Grazia will be able to identify the boatman, although she had other things on her mind and we tend not to notice gondoliers. The next day the lovers went to a priest and explained that they would be driven to sin unless he united them in holy matrimony.
“Compounding his error, Guarini had agreed to meet the couple again on Sunday morning and transport them over to the mainland, where they would hide out until her parents had no option but to accept Dolfin as the father of a future grandchild. Alfeo intervened to rescue Grazia. Guarini countered by trying to stun Alfeo-he is clearly prone to violence. My porter picked Guarini up by the scruff of the neck and threw him bodily into the Grand
