Swift nodded his head vigorously.
"That will do," Grey went on. "You need not say any more. There will be plenty of time to go in for explanations when you are well enough. All I want to know now is the exact position of the underground dynamo which was established some time ago within a few hundred yards of Rent's offices. I don't suppose he told you about it, but I am sure you know where the thing is to be found."
By way of reply, Swift reached for his coat, which was lying across the back of his bunk, and took from the breast-pocket a sheet of tracing-paper, which he handed over to Grey. The latter glanced at it and smiled. When he turned to Swift again the patient was lying with closed eyes as if on the verge of sleep. Grey stole from the cabin to the deck where Tanza was seated.
"Come along," he said. "I have it at my fingers' ends. I'll just get a pair of india-rubber gloves and shoes and a mat and we can set out at once."
They came at length to a spot some little way from the workshop, where Grey proceeded to make a close examination of the turf. He lifted a sheet of sod presently and disclosed a small grating underneath. Kneeling on the india-rubber mat and carefully shielding his hands with gloves of the same material, he proceeded to pull out a switch or two and cut through a cable which led into the tiny manhole. Then, without a further word to Tanza, he strode right on until he came to the lawn of Charlock's house, pausing at length in front of the fountain which surrounded the sundial. With the gloves still upon his hands, and the long rubber boots upon his feet, he waded through the water until he stood by the side of the sundial. He raised the cap and threw it aside. Then from the cavity below he produced a small box.
"There!" he said, with an air of subdued triumph. "Will you please examine the contents? I will forfeit my reputation if Mrs. Charlock's jewels are not inside."
CHAPTER XLVI
THE PRICE OF A CRIME
Tanza unfastened the box and removed a sheet of cotton wool which lay on the top. The sun gleamed on a heap of stones of various sizes, diamonds for the most part, which streamed and twinkled as if they had been running water. Then he laid out the rings and necklaces and the various odds and ends, which went to make up a collection of stones worth a considerable amount. The Italian knew something about jewels, and in his estimation at least ten thousand pounds' worth of jewels lay on their bed of cotton wool.
"Mrs. Charlock appeared to have a pretty taste in this respect," Tanza remarked. "These things might have belonged to the wife of a millionaire. So this is the end of our search. Well, those stones have done mischief, goodness knows. I suppose you can tell me how they managed to get there?"