the other children would be murdered - then Ralph, just ten years old, had killed one of the men-at-arms, showing the quick and deadly reflexes that had served him so well, years later, in the French wars. Thomas had despatched the other man, though not before receiving the wound that had ended in his losing his left arm - despite, or perhaps because of, the treatment given him in the hospital at Kingsbridge Priory. Then Merthin had helped Thomas bury the letter.
"Just here," Thomas had said. "Right in front of the oak tree."
There was a secret in the letter, Merthin knew now; a secret so potent that high-ranking people were frightened of it. The secret had given Thomas protection, though he had nevertheless sought sanctuary in a monastery and spent his life there.
"If you hear that I've died," Thomas had said to the boy Merthin, "I'd like you to dig up this letter and give it to a priest."
Merthin the man hefted his spade and began to dig.
He was not sure whether this was what Thomas had intended. The buried letter was a precaution against Thomas's being killed by violence, not dying of natural causes at the age of fifty-eight. Would he still have wanted the letter dug up? Merthin did not know. He would decide what to do when he had read the letter. He was irresistibly curious about what was in it.
His memory of where he had buried the bag was not perfect, and with his first try he missed the spot. He got down about eighteen inches and realized his mistake: the hole had been only about a foot deep, he was sure. He tried again a few inches to the left.
This time he got it right.
A foot down, the spade struck something that was not earth. It was soft, but unyielding. He put the spade to one side and scrabbled with his fingers in the hole. He felt a piece of ancient, rotting leather. Gently, he dislodged the earth and lifted the object. It was the wallet Thomas had worn on his belt all those years ago.
He wiped his muddy hands on his tunic and opened it.
Inside was a bag made of oiled wool, still intact. He loosened the drawstring of the bag and reached in. He pulled out a sheet of parchment, rolled into a scroll and sealed with wax.
He handled it gently, but all the same the wax crumbled as soon as he touched it. With careful fingertips he unrolled the parchment. It was intact: it had survived thirty-four years in the earth remarkably well.
He saw immediately that it was not an official document but a personal letter. He could tell by the handwriting, which was the painstaking scrawl of an educated nobleman, rather than the practised script of a clerk.
He began to read. The salutation ran:
From Edward, the second of that name, King of England, at Berkeley Castle; by the hand of his faithful servant, Sir Thomas Langley; to his beloved eldest son, Edward; royal greeting and fatherly love.
Merthin felt scared. This was a message from the old king to the new. The hand holding the document shook, and he looked up from it and scanned the greenery around him, as if there might be someone peering at him through the bushes.
My beloved son, you will soon hear that I am dead. Know that it is not true.
Merthin frowned. This was not what he had expected.
Your mother, the queen, the wife of my heart, has corrupted and subverted Roland, earl of Shiring, and his sons, who sent murderers here; but I was forewarned by Thomas, and the murderers were killed.
So Thomas had not been the assassin, after all, but the saviour of the king.
Your mother, having failed to kill me once, would surely try again, for she and her adulterous consort cannot feel safe while I live. So I have changed clothes with one of the slain murderers, a man of my height and general appearance, and I have bribed several people to swear that the dead body is mine. Your mother will know the truth when she sees the body, but she will go along with the pretence; for if I am thought to be dead, I will be no threat to her, and no rebel or rival to the throne can claim my support.
Merthin was amazed. The nation had thought Edward II to be dead. All Europe had been fooled.
But what had happened to him afterwards?
I will