When all three were out of sight, I came from my hiding-place and went at once to the building on the top of which my flier was stored.

The proprietor was puttering around one of the hangars when I came onto the roof. I could have wished him elsewhere, as I did not particularly care to have my comings and goings known.

"I don't see much of you," he said.

"No," I replied; "I have been very busy." I continued in the direction of the hangar where my ship was stored.

"Going to take your flier out tonight?" he asked.

"Yes."

"Watch out for the patrol boats," he said, "if you are on any business you wouldn't want the authorities to know about. They have been awfully busy the last couple of nights."

I didn't know whether he was just giving me a friendly tip, or if he were trying to get some information from me. There are many organizations, including the government, that employ secret agents. For aught I knew, the fellow might be a member of the assassins' guild.

"Well," I said, "I hope the police don't follow me tonight." He pricked up his ears. "I don't need any help; and, incidentally, she is extremely good-looking."

I winked at him and nudged him with my elbow as I passed, in a fashion that I thought his low mentality would grasp. And it did.

He laughed and slapped me on the back. "I guess you're worried more about her father than you are the police," he said.

"Say," he called after me, as I was climbing to the deck of my flier, "ain't she got a sister?"

As I slipped silently out over the city, I heard the hangar man laughing at his own witticism; and I knew that if he had had any suspicions I had lulled them.

It was quite dark, neither moon being in the heavens; but this very fact would make me all the more noticeable to patrol boats above me when I was passing over the more brilliantly lighted portions of the city, and so I quickly sought dark avenues and flew low among the dense shadows of the buildings.

It was a matter of only a few minutes before I reached my destination and dropped my flier gently to the roof of the building that housed the headquarters of the assassins' guild of Zodanga.

Rapas' statement that Ur Jan and his lieutenants were perfecting a plan aimed at my activities against them was the magnet that had lured me here this night.

I had decided that I would not again attempt to use the anteroom off their meeting-place, as not only was the way to it fraught with too much danger but even were I to safely reach the shadowed niche behind the cupboard, I still would be unable to hear anything of their proceedings through the closed door.

I had another plan, and this I put into immediate execution.

I brought my flier to rest at the edge of the roof directly above the room in which the assassins met; then I made a rope fast to one of the rings in her gunwale.