"Now then, Dale, you've got to be quick," he said brusquely, as if giving orders to one of his own men. "Undo that suit case. You'll find a uniform; take off the suit you're wearing and get into it. You mustn't waste a moment. I may have been seen descending, but I don't think it's likely from the height I was up."

Again Rupert tried to speak, but the words rattled incoherently in his throat. He commenced to change his clothes in a way that would have won the approval of a quick-change music-hall artist. When he had finished he packed up the blue suit of clothes and Jim strapped the case on to the monoplane again. Then he looked at Rupert critically.

"Yes, you'll do. You had better brush your moustache up a bit—so." He gave a little laugh. "Gad, you would make a very good soldier. Let's see you salute."

Rupert cast an anxious eye round the horizon. "You said there wasn't a moment to lose—some one may have seen you descend—this means life or death to me! ... and for you, the risk——"

Jim stepped forward and laid his hand on Rupert's shoulder. "Come, pull yourself together, man. You'll want all your courage in an hour's time when we land at Plymouth. You haven't forgotten what I've told you? ... I started from Netheravon with my soldier servant, Jackson. Dropped him at Chard, and he went on by rail to Exeter, where I picked him up again—you're Jackson!"

"Yes, I remember all that," Rupert replied hastily.

"Now, when we arrive at Plymouth be careful not to speak a word. Yes or no will be quite enough. Go straight to the Duke of Cornwall Hotel, and refuse all invitations to the canteen or mess. You know what to do at the hotel? Now, try that salute again, the first was rotten. It's more important than you think. We mustn't take the slightest risk of failure now."

Eventually Crichton was satisfied. They had some little difficulty in starting the engine. Altogether, scarcely half an hour passed since the monoplane alighted before it was once more in the air making great spirals as it climbed steeply into the clouds. Rupert scanned the moorlands surrounding the pool with his glasses. To his relief no human being was in sight. They had not been observed.

Jim contrived to keep Cranmere Pool as the centre and avoided even sighting Okehampton Camp, nor was Princetown visible till they sailed swiftly over it—a mere speck thousands of feet below.

It seemed only a few moments before the gleam of water and a pall of smoke showed Rupert that Plymouth was just ahead.