"Es-selam 'aleykum!" I added ("Peace be on you!") closing the interview in the Eastern manner.

The old man lowered his eyes, and saluted me with graceful gravity.

"Wa-'aleykum!" he said ("And on you!"). I conducted him to the door and closed it upon his exit. In his last salute I had noticed the flashing of a ring which he wore upon his left hand, and he was gone scarce ten seconds ere my heart began to beat furiously. I snatched up "Assyrian Mythology" and with trembling fingers turned to a certain page.

There I read—

Each Sheikh of the Assassins is said to be invested with the "Ring of the Prophet." It bears a green stone, shaped in the form of a scimitar or crescent.

My dreadful suspicion was confirmed. I knew who my visitor had been.

"God in heaven!" I whispered. "It was Hassan of Aleppo!"

Chapter 7

FIRST ATTEMPT ON THE SAFE

On the following morning I was awakened by the arrival of Bristol. I hastened to admit him.