But the Persian left him no time for reflection. Telling Raoul to stay where he was, he ran up a few steps of the staircase which they had just left and then returned.

“How stupid of us!” he whispered. “We shall soon have seen the end of those men with their lanterns. It is the firemen going their rounds.” 4

The two men waited five minutes longer. Then the Persian took Raoul up the stairs again; but suddenly he stopped him with a gesture. Something moved in the darkness before them.

“Flat on your stomach!” whispered the Persian.

The two men lay flat on the floor.

They were only just in time. A shade, this time carrying no light, just a shade in the shade, passed. It passed close to them, near enough to touch them.