Ruefully, because the henchman, a likeable schemer named Ercole, is secretly involved with dissident elements in the court of Faggio who want to keep Niccoló alive, and so he contrives to stuff a young goat into the cannon instead, meanwhile smuggling Niccoló out of the ducal palace disguised as an elderly procuress.

This comes out in the first scene, as Niccoló confides his history to a friend, Domenico. Niccoló is at this point grown up, hanging around the court of his father's murderer, Duke Angelo, and masquerading as a special courier of the Thurn and Taxis family, who at the time held a postal monopoly throughout most of the Holy Roman Empire. What he is trying to do, ostensibly, is develop a new market, since the evil Duke of Squamuglia has steadfastly refused, even with the lower rates and faster service of the Thurn and Taxis system, to employ any but his own messengers in communicating with his stooge Pasquale over in neighboring Faggio. The real reason Niccoló is waiting around is of course to get a crack at the Duke.

Evil Duke Angelo, meanwhile, is scheming to amalgamate the duchies of Squamuglia and Faggio, by marrying off the only royal female available, his sister Francesca, to Pasquale the Faggian usurper. The only obstacle in the way of this union is that Francesca is Pasquale's mother-her illicit liaison with the good ex-Duke of Faggio being one reason Angelo had him poisoned to begin with. There is an amusing scene where Francesca delicately seeks to remind her brother of the social taboos against incest. They seem to have slipped her mind, replies Angelo, during the ten years he and Francesca have been having their affair. Incest or no, the marriage must be; it is vital to his long-range political plans. The Church will never sanction it, says Francesca. So, says Duke Angelo, I will bribe a cardinal. He has begun feeling his sister up and nibbling at her neck; the dialogue modulates into the fevered figures of intemperate desire, and the scene ends with the couple collapsing onto a divan.

The act itself closes with Domenico, to whom the naive Niccoló started it off by spilling his secret, trying to get in to see Duke Angelo and betray his dear friend. The Duke, of course, is in his apartment busy knocking off a piece, and the best Domenico can do is an administrative assistant who turns out to be the same Ercole who once saved the life of young Niccoló and aided his escape from Faggio. This he presently confesses to Domenico, though only after having enticed that informer into foolishly bending over and putting his head into a curious black box, on the pretext of showing him a pornographic diorama. A steel vise promptly clamps onto the faithless Domenico's head and the box muffles his cries for help. Ercole binds his hands and feet with scarlet silk cords, lets him know who it is he's run afoul of, reaches into the box with a pair of pincers, tears out Domenico's tongue, stabs him a couple times, pours into the box a beaker of aqua regia, enumerates a list of other goodies, including castration, that Domenico will undergo before he's allowed to die, all amid screams, tongueless attempts to pray, agonized struggles from the victim. With the tongue impaled on his rapier Ercole runs to a burning torch set in the wall, sets the tongue aflame and waving it around like a madman concludes the act by screaming,

The lights went out, and in the quiet somebody across the arena from Oedipa distinctly said, "Ick." Metzger said, "You want to go?"

"I want to see about the bones," said Oedipa. She had to wait till the fourth act. The second was largely spent in the protracted torture and eventual murder of a prince of the church who prefers martyrdom to sanctioning Francesca's marriage to her son. The only interruptions come when Ercole, spying on the cardinal's agony, dispatches couriers to the good-guy element back in Faggio who have it in for Pasquale, telling them to spread the word that Pasquale's planning to marry his mother, calculating this ought to rile up public opinion some; and another scene in which Niccoló , passing the time of day with one of Duke Angelo's couriers, hears the tale of the Lost Guard, a body of some fifty hand-picked knights, the flower of Faggian youth, who once rode as protection for the good Duke. One day, out on manoeuvres near the frontiers of Squamuglia, they all vanished without a trace, and shortly afterward the good Duke got poisoned. Honest Niccoló , who always has difficulty hiding his feelings, observes that if the two events turn out to be at all connected, and can be traced to Duke Angelo, boy, the Duke better watch out, is all. The other courier, one Vittorio, takes offense, vowing in an aside to report this treasonable talk to Angelo at the first opportunity. Meanwhile, back in the torture room, the cardinal is now being forced to bleed into a chalice and consecrate his own blood, not to God, but to Satan. They also cut off his big toe, and he is made to hold it up like a Host and say, "This is my body," the keenwitted Angelo observing that it's the first time he's told anything like the truth in fifty years of systematic lying. Altogether, a most anti-clerical scene, perhaps intended as a sop to the Puritans of the time (a useless gesture since none of them ever went to plays, regarding them for some reason as immoral).

The third act takes place in the court of Faggio, and is spent murdering Pasquale, as the culmination of a coup stirred up by Ercole's agents. While a battle rages in the streets outside the palace, Pasquale is locked up in his patrician hothouse, holding an orgy. Present at the merrymaking is a fierce black performing ape, brought back from a recent voyage to the Indies. Of course it is somebody in an ape suit, who at a signal leaps on Pasquale from a chandelier, at the same time as half a dozen female impersonators who have up to now been lounging around in the guise of dancing girls also move in on the usurper from all parts of the stage. For about ten minutes the vengeful crew proceed to maim, strangle, poison, burn, stomp, blind and otherwise have at Pasquale, while he describes intimately his varied sensations for our enjoyment. He dies finally in extreme agony, and in marches one Gennaro, a complete nonentity, to proclaim himself interim head of state till the rightful Duke, Niccoló , can be located.

There was an intermission. Metzger lurched into the undersized lobby to smoke, Oedipa headed for the ladies' room. She looked idly around for the symbol she'd seen the other night in The Scope, but all the walls, surprisingly, were blank. She could not say why, exactly, but felt threatened by this absence of even the marginal try at communication latrines are known for.

Act IV of The Courier's Tragedy discloses evil Duke Angelo in a state of nervous frenzy. He has learned about the coup in Faggio, the possibility that Niccoló may be alive somewhere after all. Word has reached him that Gennaro is levying a force to invade Squamuglia, also a rumor that the Pope is about to intervene because of the cardinal's murder. Surrounded by treachery on all sides, the Duke has Ercole, whose true role he still does not suspect, finally summon the Thurn and Taxis courier, figuring he can no longer trust his own men. Ercole brings in Niccoló to await the Duke's pleasure. Angelo takes out a quill, parchment and ink, explaining to the audience but not to the good guys, who are still ignorant of recent developments, that to forestall an invasion from Faggio, he must assure Gennaro with all haste of his good intentions. As he scribbles he lets drop a few disordered and cryptic remarks about the ink he's using, implying it's a very special fluid indeed. Like: