So Richard ordered that Sir James should be sent in. When he came, Richard held a private conference with him, in which he communicated to him, by means of dark hints and insinuations, what he required. Tyrrel undertook to execute the deed. So Richard gave him a letter to Sir Robert Brakenbury, in which he ordered Sir Robert to deliver up the keys of the Tower to Sir James, "to the end," as the letter expressed it, "that he might there accomplish the king's pleasure in such a thing as he had given him commandment." Sir James, having received this letter, proceeded to London, taking with him such persons as he thought he might require to aid him in his work. Among these was a man named John Dighton. John Dighton was Sir James's groom. He was "a big, broad, square, strong knave," and ready to commit any crime or deed of violence which his master might require. On arriving at the Tower, Sir James delivered his letter to the governor, and the governor gave him up the keys. Sir James went to see the keepers of the prison in which the boys were confined. There were four of them. He selected from among these four, one, a man named Miles Forest, whom he concluded to employ, together with his groom, John Dighton, to kill the princes. He formed the plan, gave the men their instructions, and arranged it with them that they were to carry the deed into execution that night. Accordingly, at midnight, when the princes were asleep, the two men stole softly into the room, and there wrapped the poor boys up suddenly in the bed-clothes, with pillows pressed down hard over their faces, so that they could not breathe. The boys, of course, were suddenly awakened, in terror, and struggled to get free; but the men held them down, and kept the pillows and bed-clothes pressed so closely over their faces that they could not breathe or utter any cry. They held them in this way until they were entirely suffocated. When they found that their struggles had ceased, they slowly opened the bed-clothes and lifted up the pillows to see if their victims were really dead. "Yes," said they to each other, "they are dead." The murderers took off the clothes which the princes had on, and laid out the bodies upon the bed. They then went to call Sir James Tyrrel, who was all ready, in an apartment not far off, awaiting the summons. He came at once, and, when he saw that the boys were really dead, he gave orders that the men should take the bodies down into the court-yard to be buried. The grave was dug immediately, just outside the door, at the foot of the stairs which led up to the turret in which the boys had been confined. When the bodies had been placed in the ground, the grave was filled up, and some stones were put upon the top of it.