The floor was of stone. I had been thinking of that as we sailed across from St. Helen's. I had been thinking, too, that when I was carried into the inner room the door of the partition was jambed against the floor, that Roper had kicked it open, and that, as it yielded, I had heard some iron thing spring from beneath it and jingle across the floor. That iron thing was, undoubtedly, the key which I held in my hand.

I placed it again under the door. There was a fairly strong wind blowing. I told Dick to set the outer door wide open to the wind, which he did. And immediately the inner door began to swing backwards and forwards in the draught. But it dragged the key with it, and it dragged the key over the stone floor. The shed was filled with a harsh, shrill, rasping sound, which set one's fingernails on edge. I set my hand to the door and swung it more quickly backwards and forwards. The harsh sound rose to a hideous inhuman grating screech.

"There are your dead sailormen, Dick," said I. "It was Cullen Mayle who took the key from your door on the night I landed on Tresco--Cullen Mayle, who had my horse to carry him on the road and smuggler friends at Penzance to carry him over the sea. It was Cullen Mayle who was in this shed that night, and used his old trick to scare people from his hiding-place. It was Cullen Mayle who was first in the Abbey burial ground. No doubt Cullen Mayle has that cross. And it was Cullen Mayle whom the woman---- But, there, enough."

The door was wide open now, and this key had opened it. I could see everything clearly. My eyes were, indeed, now accustomed to the gloom--so accustomed that, as I stepped from the shed, all the sunlight seemed struck out of the world.

It was all clear. Helen Mayle had come up to the shed that night. She had told Cullen of the stick in the coffin--yes, she must have done that. She told him of the men who watched. What more had passed between them I could not guess, but she had come back with despair in her heart, and, in the strength of her despair, had walked late at night into his room--with that silk noose in her hand.

That she loved him--that was evident. But why could she not have been frank with me? Cullen had spoken with her, had been warned by her, had left the island since. Why had she kept up this pretence of anxiety on his account, of fear that he was in distress, of dread lest he return unwitting of his peril and fall into Glen's hand? Clutterbuck's word "duplicity" came stinging back to me.

I sent Dick away to sail the boat back to Merchant's Point, and lay for a long while on the open hillside, while the sun sank and evening came. It was only yesterday that she had played in her garden upon the violin. I had felt that I knew her really for the first time as she sat with her pale face gleaming purely through the darkness. Why could she not have been frank to me? The question assailed me; I cried it out. Surely there was some answer, an answer which would preserve my picture of her in her tangled garden, untarnished within my memories. Surely, surely! And how could such deep love mate with duplicity?

I put the scarf into my pocket, and crossed the hill again and came down to Merchant's Point. I could not make up my mind to go in. How could I speak of that night when I slept in Cullen Mayle's bedroom? I lay now upon the gorse watching the bright windows. Now I went down to the sea and its kindly murmurings. And at last, about ten o'clock of the night, a white figure came slowly from the porch and stood beside me.

"You have been here--how long?--I have watched you," she said very gently. "What is it? Why didn't you come in?"

I took both her hands in mine and looked into her eyes.