The arrival of Wilkinson in New Orleans was awaited by friends and foes, with bated breath. The conspirators had as yet no intimation of his intentions: Governor Claiborne was torn by suspicion of this would-be savior, for at the very time he was reading Wilkinson's gasconade he received a cryptic letter from Andrew Jackson which ran, "keep a watchful eye on our General and beware of an attack as well from your own country as Spain!" If Claiborne could not trust "our General," whom could he trust!
The stage was now set for the last act in the drama. Wilkinson arrived in the city, deliberately set Claiborne aside, and established a species of martial law, not without opposition. To justify his course Wilkinson swore to an affidavit based on Burr's letter of the 29th of July and proceeded with his arbitrary arrests. One by one Burr's confederates were taken into custody. The city was kept in a state of alarm; Burr's armed thousands were said to be on the way; the negroes were to be incited to revolt. Only the actual appearance of Burr's expedition or some extraordinary happening could maintain this high pitch of popular excitement and save Wilkinson from becoming the ridiculous victim of his own folly.
On the 10th of January (1807), after an uneventful voyage down the Mississippi, Burr's flotilla reached the mouth of Bayou Pierre, some thirty miles above Natchez. Here at length was the huge armada which was to shatter the Union--nine boats and sixty men! Tension began to give way. People began to recover their sense of humor. Wilkinson was never in greater danger in his life, for he was about to appear ridiculous. It was at Bayou Pierre that Burr going ashore learned that Wilkinson had betrayed him. His first instinct was to flee, for if he should proceed to New Orleans he would fall into Wilkinson's hands and doubtless be court-martialed and shot; but if he tarried, he would be arrested and sent to Washington. Indecision and despair seized him; and while Blennerhassett and other devoted followers waited for their emperor to declare his intention, he found himself facing the acting-governor of the Mississippi Territory with a warrant for his arrest. To the chagrin of his fellow conspirators, Burr surrendered tamely, even pusillanimously.