DURING THE long night, The Three Investigators remained hidden in the sentry hut on the palace roof. No one searched that part of the castle — it was too obvious they had gone down, not up. The cleverly placed dangling rope, and Jupiter’s handkerchief, which had been found at the entrance to the cellars, led the search away from the boys.

After Rudy and Elena left them, Pete, Bob and Jupiter had stretched out on the wooden benches to try to sleep. Despite the uncomfortable beds and the adventures of the evening, they slept soundly.

As the sun rose the next morning, Pete woke, yawned and stretched his muscles. Jupiter was already awake, doing some exercises to take a slight stiffness out of his muscles. Pete found his shoes, put them on and stood up. Bob was still sound asleep.

“Looks like a nice day,” Pete commented, peering out the narrow slits which constituted windows in the little stone hut. “Except that it doesn’t look like we’re going to get any breakfast. Or lunch. Or dinner. I’d feel a lot better if I knew when we were going to eat.”

“I’d feel a lot better if I knew how we were going to get out of this palace,” Jupiter replied. “I wonder what Rudy’s plans are.”

“And I wonder whether Bob will remember what he did with the silver spider when he wakes up.”

Just then Bob sat up, blinking.

“Where are we?” he asked. Then he put his hand to the back of his head. “Ouch, my head hurts. I remember now.”

“You remember what you did with the silver spider?” Pete burst out.

But Bob shook his head. “I remember where we are,” he said. “And I remember how my head got bumped — that is, I remember what you told me. That’s all.”

“No use worrying about it, Bob,” Jupiter said. “We just have to wait and see if your memory comes back by itself. It may or it may not.”

“Uh-oh!” Pete said, at the window. “Someone’s coming out on the roof. He’s looking this way!”

All three crowded to the window. A somewhat stooped man in baggy gray clothing and wearing a large apron had stepped through the doorway from the stairs. He held a broom, dustpan and cloth. He looked around stealthily, then put down his cleaning implements and came scuttling toward the sentry hut.

“Let him in, Pete,” Jupiter said. “He’s not a guard and he obviously knows we’re here.”

Pete eased the door open and the man slipped inside. Once within, he breathed a sigh of relief.

“Wait!” he said in heavily accented English. “Make sure I was not followed.”

They watched at the window for another couple of minutes. No one else appeared, and they all relaxed.

“Good,” the man said. “I am a cleaner. I slipped away up the stairs. I have message from Rudy. He says does one named Bob remember?”

“Tell him no,” Jupiter answered. “Bob doesn’t remember.”

“I will tell. Rudy says also, be patient. When it is very dark again he will come. Meanwhile, here is food.”

The man reached into the pockets of his ample apron and brought out wrapped sandwiches, some fruit, and a plastic bag of water, all of which had been hidden in the capacious garment.

The boys took the food with great satisfaction. The man did not linger.

“I must hurry back,” he said. “All is excitement below. Be patient and may Prince Paul extend his protection to you and to our prince.”

With that he was gone. Pete gratefully bit into a sandwich.

“We’ll have to ration the food to make it last all day,” Jupiter remarked, passing a sandwich to Bob. “And especially the water. But it’s lucky Rudy and Elena have friends in the castle.”

“Lucky for us,” Bob said. “What was it he was telling us last night about the organization of minstrels to assist Prince Djaro? My head hurt too much for me to listen carefully.”

“Some of it you already know,” Jupiter said between bites, “but I’ll go over it again. Rudy said that his and Elena’s father was the prime minister when Prince Djaro’s father ruled. As he told us, he’s a descendant of the original minstrel family that saved Prince Paul.

“When Duke Stefan became Regent, Rudy’s father was forced into retirement. He suspected Duke Stefan then, and he began to organize everyone he could find who was loyal to Prince Djaro into an undercover organization to keep an eye on Stefan. They call themselves the Minstrel Party.

“Some are here in the castle as guards, or officers, and I suppose the cleaning man who brought us the food is one. Last night loyal Minstrels on the staff of guards learned of the plot to arrest us and got word to Rudy’s father. By working very fast, Rudy and Elena were in time to help us. When they were children, their father lived in the palace, you remember, and they explored it from top to bottom. They know hidden passageways and tunnels and drain sewers that no one else knows about, so they can come and go unseen. Remember what Djaro told us about the palace being built on the ruins of an older castle?”

“All that is just great,” Pete put in, “but we’re still stuck here on top of the palace. Do you think Rudy and Elena will really be able to lead us out tonight — that is if nobody catches us before then?”

“They think so,” Jupiter answered. “They plan to recruit some more Minstrels to help them, I think. We’ve got to get out of here so we can get that tape I gave you to the American Embassy. It’s important evidence.”

“I’d feel a lot better if I was James Bond,” Pete grumbled. “He can get out of anything. But I’m not James Bond and neither are you. I’ve got a funny feeling things aren’t going to go as smoothly as Rudy hopes.”

“We have to do our best,” Jupe told him. “Only by getting away from here can we help Djaro, and after all, that’s what we came for. In any case, we can’t do a thing until we hear from Rudy and Elena again. By the way, Second, did you know you finished breakfast and are already halfway through lunch?”

Pete hastily put down the sandwich he was about to bite into.

“Thanks for telling me,” he said. “I’d hate to miss lunch. It looks to me as if it’s going to be a long day up here on the roof.”

It was indeed a long day. They took turns watching through the window slits and napping. Finally the sun set, a crimson ball behind the golden dome of St. Dominic’s.

The birds twittered sleepily in the parks of Denzo and went to bed.

With the coming of darkness, the palace quieted.

Soon the only people who remained awake were the guards, who sleepily manned their posts. It had been so long since anything exciting had happened in Varania that they found it hard to be alert, even though they had special orders.

Deep in the dark cellars of the castle, two figures crept noiselessly along secret routes that they alone knew. Slowly Rudy and Elena made their way upward, aided at one vital staircase by a guard who turned his back and pretended not to see them.

Presently they emerged into the night silence of the castle roof, and waited to make sure they had not been followed. Then they slipped across to the guard hut, moving so silently that they almost took Pete, who was watching, by surprise. He let them in and Rudy risked lighting a flashlight which he had covered with a handkerchief.

“We’re ready to move,” he told the three. “Our plan is to sneak you out of the castle and get you to the American Embassy for refuge. The rumour is that Duke Stefan has speeded up his own plans. We think that tomorrow he plans to cancel Prince Djaro’s coronation and proclaim himself Regent indefinitely.

“Unfortunately we can’t do anything to stop him. The people would storm the castle and rescue Prince Djaro if they knew, but there’s no way to tell them he’s in danger. We thought of trying to capture the radio and television station, but Duke Stefan is too cunning. He has the building heavily guarded.