"You'll know when you see him."

"With respect to your Grace, this is not enough to tell me."

"You can't be told more, sir."

"Then I won't go."

He frowned and beat his gloves on his thigh impatiently.

"A gentleman, your Grace," said I, "must be trusted, or he cannot serve."

He looked round the little cell and asked significantly,

"Is your state such as to ent.i.tle you to make conditions?"

"Only if your Grace has need of services which I can give or refuse," I answered, bowing.

His irritation suddenly vanished, or seemed to vanish. He leant back in his chair and laughed.

"Yet all the time," said he, "you've guessed the gentleman! Isn't it so?

Come, Mr Dale, we understand one another. This service, if all goes well, is simple. But if you're interrupted in leaving the Castle, you must use your sword. Well, if you use your sword and don't prove victorious, you may be taken. If you're taken it will be best for us all that you shouldn't know the name of this gentleman, and best for him and for me that I should not have mentioned it."

The little doubt I had harboured was gone. Buckingham and Monmouth were hand in hand. Buckingham's object was political, Monmouth was to find his reward in the prize that I was to rescue from the clutches of M. de Perrencourt and hand over to him at the hostelry in Deal. If success attended the attempt, I was to disappear; if it failed, my name and I were to be the shield and bear the brunt. The reward was fifty guineas, and perhaps a serviceable grat.i.tude in the minds of two great men, provided I lived to enjoy the fruit of it.

"You'll accept this task?" asked the Duke.

The task was to thwart M. de Perrencourt and gratify the Duke of Monmouth. If I refused it, another might accept and accomplish it; if such a champion failed, M. de Perrencourt would triumph. If I accepted, I should accept in the fixed intention of playing traitor to one of my employers. I might serve Buckingham's turn, I should seek to thwart Monmouth.

"Who pays me fifty guineas?" I asked.

"Faith, I," he answered with a shrug. "Young Monmouth is enough his father's son to have his pockets always empty."

On this excuse I settled my point of casuistry in an instant.

"Then I'll carry the lady away from the Castle," I cried.

He started, leant forward, and looked hard in my face. "What do you mean, what do you know?" he asked plainly enough, although silently. But I had cried out with an appearance of zeal and innocence that baffled his curiosity, and my guileless expression gave his suspicions no food.

Perhaps, too, he had no wish to enquire. There was little love between him and Monmouth, for he had been bitterly offended by the honours and precedence a.s.signed to the Duke; only a momentary coincidence of interest bound them together in this scheme. If the part that concerned Buckingham were accomplished, he would not break his heart on account of the lady not being ready for Monmouth at the hostelry of the Merry Mariners.

"I think, then, that we understand one another, Mr Dale?" said he, rising.

"Well enough, your Grace," I answered with a bow, and I rapped on the door. The gaoler opened it.

"Mr Dale is free to go where he will within the Castle. You can return to your quarters," said Buckingham.

The soldier marched off. Buckingham turned to me.

"Good fortune in your enterprise," he said. "And I give you joy on your liberty."

The words were not out of his mouth when a lieutenant and two men appeared, approaching us at a rapid walk, nay, almost at a run. They made directly for us, the Duke and I both watching them. The officer's sword was drawn in his hand, their daggers were fixed in the muzzles of the soldiers' muskets.

"What's happened now?" asked Buckingham in a whisper.

The answer was not long in coming. The lieutenant halted before us, crying,

"In the King's name, I arrest you, sir."

"On my soul, you've a habit of being arrested, sir," said the Duke sharply. "What's the cause this time?"

"I don't know," I answered; and I asked the officer, "On what account, sir?"

"The King's orders," he answered curtly. "You must come with me at once." At a sign from him his men took their stand on either side of me.

Verily, my liberty had been short! "I must warn you that we shall stand at nothing if you try to escape," said the officer sternly.

"I'm not a fool, sir," I answered. "Where are you going to take me?"

"Where my orders direct."

"Come, come," interrupted Buckingham impatiently, "not so much mystery.

You know me? Well, this gentleman is my friend, and I desire to know where you take him."

"I crave your Grace's pardon, but I must not answer."

"Then I'll follow you and discover," cried the Duke angrily.

"At your Grace's peril," answered the officer firmly. "If you insist, I must leave one of my men to detain you here. Mr Dale must go alone with me."

Wrath and wonder were eloquent on the proud Duke's face. In me this new misadventure bred a species of resignation. I smiled at him, as I said,

"My business with your Grace must wait, it seems."

"Forward, sir," cried the officer, impatiently, and I was marched off at a round pace, Buckingham not attempting to follow, but turning back in the direction of the Duke of Monmouth's quarters. The confederates must seek a new instrument now; if their purpose were to thwart the King's wishes, they might not find what they wanted again so easily.

I was conducted straight and quickly to the keep, and pa.s.sed up the steps that led to the corridor in which the King was lodged. They hurried me along, and I had time to notice nothing until I came to a door near the end of the building, on the western side. Here I found Darrell, apparently on guard, for his sword was drawn and a pistol in his left hand.

"Here, sir, is Mr Dale," said my conductor.

"Good," answered Darrell briefly. I saw that his face was very pale, and he accorded me not the least sign of recognition. "Is he armed?" he asked.

"You see I have no weapons, Mr Darrell," said I stiffly.

"Search him," commanded Darrell, ignoring me utterly.

I grew hot and angry. The soldiers obeyed the order. I fixed my eyes on Darrell, but he would not meet my gaze; the point of his sword tapped the floor on which it rested, for his hand was shaking like a leaf.

"There's no weapon on him," announced the officer.

"Very well. Leave him with me, sir, and retire with your men to the foot of the steps. If you hear a whistle, return as quickly as possible."