Queen Mary was very much alarmed. She had no armed force in readiness to encounter this danger. She sent messengers across the Thames and down the river to meet Wyatt, who was advancing at the head of four thousand men, to ask what it was that he demanded. He replied that the queen must be delivered up as his prisoner, and also the Tower of London be surrendered to him. This showed that his plan was to depose the queen. Mary rejected these proposals at once, and, having no forces to meet this new enemy, she had to retreat from Westminster into the city of London, and here she took refuge in the city hall, called the Guildhall, and put herself under the protection of the city authorities. Some of her friends urged her to take shelter in the Tower; but she had more confidence, she said, in the faithfulness and loyalty of her subjects than in castle walls. Wyatt continued to advance. He was still upon the south side of the river. There was but one bridge across the Thames, at London, in those days, though there are half a dozen now, and this one was so strongly barricaded and guarded that Wyatt did not dare to attempt to cross it. He went up the river, therefore, to cross at a higher point; and this circuit, and several accidental circumstances which occurred, detained him so long that a considerable force had been got together to receive him when he was ready to enter the city. He pushed boldly on into the narrow streets, which received him like a trap or a snare. The city troops hemmed up his way after he had entered. They barricaded the streets, they shut the gates, and armed men poured in to take possession of all the avenues. Wyatt depended upon finding the people of London on his side. They turned, instead, against him. All hope of success in his enterprise, and all possibility of escape from his own awful danger, disappeared together. A herald came from the queen's officer calling upon him to surrender himself quietly, and save the effusion of blood. He surrendered in an agony of terror and despair. The Duke of Suffolk learned these facts in another county, where he was endeavoring to raise a force to aid Wyatt. He immediately fled, and hid himself in the house of one of his domestics. He was betrayed, however, seized, and sent to the Tower. Many other prominent actors in the insurrection were arrested, and the others fled in all directions, wherever they could find concealment or safety.