CHAPTER XI "THE AIR WOLVES ARE HUNTING TO-NIGHT!"

He made no comment, and did not interrupt me until I had completely finished, nor did his inscrutable face give any indication of what he thought.

"My own investigations," he said, "can be told in a few words. The small steamship which brings supplies to the cove behind the inn is the private property of Helzephron, and she is a great deal faster and much better engined than most people are aware. She lies at the little port of Hayle, which is on the main line from Plymouth to Penzance, in St. Ives Bay. At certain times large quantities of petrol arrive in separate consignments from different parts of the country. The Sea Gull is loaded to her capacity, and then makes the short voyage to Zerran Cove."

"That's the last link!" I said. "No one could doubt now!"

"There is another, still more interesting fact. Hayle was once a place of much greater importance than it is at present. There were large foundries and engineering works there in the past. These have been abandoned, owing to the silting up of the harbour, for many years, as only vessels of small draught can enter easily to-day. But the foundry buildings remain. From time to time a portion of them has been let for this or that small enterprise. Three years ago Helzephron rented a part of the works and installed machinery. He had about twenty labourers, but the real work, whatever it was, took place in a large experimental shed, to which no one was admitted but he and his friends. They were already at Zerran, and used to drive over in motors every day. It was locally known that some new machinery for Wheal Tregeraint was being made. Many shippings took place from Hayle to Zerran Cove."

"But the ship, the Pirate Ship itself?"

"Who can tell? We go step by step in the dark. Many theories have crossed my mind. I have dismissed them all. I want to approach this, the most sinister problem of all, with a blank mind. We can do nothing till we are on the spot. Our preliminary work is over, but the real labour begins."

"A sinister problem enough," I answered bitterly. "But not the most trouble to me. I tell you, Danjuro, that as I lay among the heather and looked down upon that lonely house, as I thought of the devilish crew that live there, for a moment my heart turned to water, and the agony was more than I could endure. She may be there, at this moment, defenceless and in the power ..."

I could not go on. I covered my face with my hands, and was nearer breaking down than ever before. Then I felt a hand on my shoulder. "It has never left my mind, either. Do not give way, for the moment of action has come. We go to the inn at Zerran to-night—within the hour."

"To-night!"