Alexius Ducas, a kinsman of the Emperors and _protovestiarios_ of the household, whom the people called "Mourtozouphlos" on account of his thick overhanging eyebrows, determined to dethrone the Cæsars and replace them. He prevailed on Alexius to leave the palace for safety, and at once placed him in chains. In a few days both he and his father were dead, and Alexius V. was crowned in S. Sophia. The new Emperor set himself at once to defend the city, and at once he drew down on him the vengeance of the Crusaders. They were, of course, the defenders of Isaac Angelus and his son. "Never was so horrible a treason committed by any people as deposing and imprisoning young Alexius," says Villehardouin, who had a few days before taken part in insulting him to his face. When a little later they heard that he was dead, they paused for a while as though in dismay: their difficulties grew on them: the storms of a January at Constantinople made them reluctant to embark: and yet what could they do? Henry Dandolo met the new Emperor in conference within the walls, and demanded the submission of the Church to Rome and an immediate payment of money. It is said that there was a treacherous attempt to capture the Emperor. At any rate no compromise was arrived at, and the divergent parties among the Crusaders agreed to besiege the city. Long was the debate before the final step was taken. They talked, says Villehardouin in his quaint way, before and behind. At last it was agreed how to divide the spoil, how a new Emperor and a new patriarch should be chosen. On April 9, 1204, the first attack was delivered, on the Petrion or Phanar, and the gate now called Petri Kapoussi at the east of the church of the Patriarchate was first attacked. The invaders were repulsed. A second attack, on the 12th, was more successful. "The flying bridge of the _Pélerine_ lodged itself on a tower and allowed a bold French knight, André d'Urboise, to rush across, seize the tower, and clear a way for their comrades to follow. Here ladders were then landed, the walls scaled, three gates forced, and the city thrown open to the whole host of the invaders." In vain did Mourtozouphlos try to rally his troops; he was forced to take refuge in the palace of the Bucoleon. In the night he fled through the Golden Gate, through which before Emperors had entered only in triumphal procession. Next day the Crusaders entered; the palaces were occupied; the troops marched through the streets; and then the horrible work of plunder and ravage began.