"I know nothing."

"I have forgotten the secret," Martin whispered.

He moved away slowly and then stopped.

"Master, why not be rich? What is it to you and me what happens to Mistress Barbara, so we can be rich? I would be rich, too. If Lord Rosmore has power over you, money and jewels will buy freedom. It is true, somewhere in the Abbey the wealth of the Indies has been buried. I know it."

"Then tell me, Martin."

"You fool, you fool, you have made me forget, but I shall remember if you will only let me. In dreams, when we promise and do not fulfil, we forget everything. You must help my mistress, or I cannot remember. See, I have a proof. Once, long ago, I found that in the Nun's Room; I thought it was gla.s.s, but Mistress Barbara's voice says it is a diamond.

Take it, master, you will know."

It was a diamond which Sir John held between his finger and thumb. In the moonlight the colours sparkled, such deep, clear colours as never came from gla.s.s. It was a stone that had been set; how had it come into the Nun's Room? Sir John's pulses quickened. If he told what he knew, what harm would be done?

"It is a diamond, Martin."

"One among hidden hundreds. Help the mistress, master, and let us be rich. You must give me a little of all we find, so that I may always have a fire in winter and can eat and drink when I like; that is to be rich, indeed."

"I will tell you what I know, Martin, but how can it help Barbara?"

"She has command of my thoughts, as you speak she will hear; but a warning, master--you must speak the truth. I shall not know the truth from a lie, but she will, and if you lie we shall not find the treasure."

"Barbara went to Dorchester to try and save the highwayman, Gilbert Crosby," said Sir John. "It was Rosmore's device to send her word that Crosby was a prisoner, and on the way she was captured, not by the King's troops as a rebel, but by men in Rosmore's pay. She is in no real danger, but she does not know this. She will not be brought before Jeffreys or any other judge, but she will be treated as though this were to be her fate. Rosmore will save her, do you understand, and in her grat.i.tude she will give him his reward."

"How will he save me?" came the question in a monotonous voice, and Sir John started, for it did not seem as if Martin had asked it.

"The day of the trial will be fixed--it may be to-day or to-morrow, I cannot tell; but the night before she will be smuggled into a waiting coach and driven here to Aylingford."

"Must she promise to marry Lord Rosmore first?"

"Probably. Yes, he will certainly make her promise that before he helps her. It is not a hard promise to make, Martin; Lord Rosmore is a better mate than 'Galloping Hermit.'"

Martin sighed and rubbed his eyes. He looked round him and then at Sir John.

"I thought I was speaking to Mistress Barbara," he said. "Ah, I remember, I was. We have helped her, Sir John. How she will use that help does not matter. Is she to give a promise to Rosmore? I wonder what will happen if she will not give it?"

"I do not know. Such is Lord Rosmore's plan, but circ.u.mstances might make him alter it."

"And if he fails he may denounce her and leave her to her fate," said Martin. "She won't be the only woman to suffer, and, whichever way it ends, we have something else to think of--riches."

"Is it true about this treasure, Martin?" said Sir John.

"True! As true as that Lady Lisle was foully executed at Winchester for just such a crime as Mistress Barbara may be accused of if she will make no promise to Lord Rosmore."

"That is a horrible thought," said Sir John, shrinking from him.

"We mustn't think. Those who would get rich quickly must act. Come."

He led the way along the terrace towards the ruins, and Sir John followed him almost as if he expected to see movement in the motionless shadows about him. The prospect of finding this hidden wealth, and all it would mean to him, shut out every other thought. The legend of buried treasure at the Abbey was not a new one. The monks who had lived in it had grown wealthy--why should they not have left their wealth behind them? Martin was mad, but in his madness he had strange visions; Sir John was satisfied that he had had many proofs of this, and he followed him now, never doubting that the treasure existed and would be found.

They came to the opening of the Nun's Room.

"The creepers in this corner are a natural ladder, Sir John."

"But we cannot go down into it, Martin."

"How else shall we get the riches?"

"Those who enter the Nun's Room die within the year," said Sir John, trembling.

"A tale made to keep the curious from looking for the treasure," Martin answered. "I have gone down many times, but I searched in vain, not having the key to the secret. To-night I have it. I will go first," and, kneeling down, he grasped the creepers, which grew strongly here, and lowered himself quickly.

Sir John was not so agile, but he went down after him. He would have accomplished a far more difficult feat rather than remain behind.

"I wonder whether Mistress Barbara will make that promise?" said Martin, as Sir John came to the floor beside him.

"I wonder."

"If she doesn't, death. If she does, Rosmore will have a wife; the poor highwayman will doubtless hang at Tyburn; but we shall be rich. That matters, nothing else does."

"Nothing else, Martin," and, indeed, Sir John was too excited to be troubled by any other thought.

Martin guided him across the room.

"Feel, Sir John. This is the ledge where they say the Nun slept; creepers hang over it, and behind these creepers--listen, Sir John, listen!" and he knocked sharply against the stone wall. "Hollow! It's true! This is no solid wall as it seems. Feel, Sir John, your finger on the edge of this great slab. A doorway built up, and not so long ago.

Listen! Hollow! It's true, it's true!" and Martin jumped and clapped his hands like a child.

"Yes, it's hollow, sure enough," said Sir John.

"Light and a pick. We'll be in the treasure chamber before morning.

Wait, Sir John, I'll get them."

"Stop, Martin; where are you going?"

"For a light and a pick," and he climbed out by the creepers in the corner. "I know the treasure has been hidden there. I have seen it in my dreams."

"Be quick, Martin."

"I shall make more haste than I have ever done in my life before," he answered, bending over the edge by the corner. "Poor Rosmore! poor highwayman! Only a wife and a gibbet for them. But for us--"

"Stop talking, Martin, and let us get to work," came the answer from below.

"I wonder whether Mistress Barbara will make a promise?" And Martin cut and wrenched at the creepers where they clung to the stone floor and fallen masonry at the top.

"What are you doing?" said Sir John.

"Freeing myself from the creepers. That's done. I'll hasten, Sir John, never fear."