Ketrik gave but a glance to the overhead mono-cars, preferring to stroll leisurely. He found the people, the streets, and the queer facaded buildings much the same as he'd know them years ago.

There was one startling difference. At the end of this main thoroughfare a forbidding wall reared up, to extend out of sight in either direction. That was the wall around the laboratories. Ketrik could not possibly see what lay beyond.

He made his way slowly in that direction. Thurlo had furnished him with apparel that stamped him as a prosperous, somewhat foppish Martian, perhaps a mercantile buyer. He stopped once, listened to news blaring from a public Tele-system, but it contained nothing of consequence to him—no mention of Dar Vaajo or local events.

A few minutes later he entered a tiny shop dealing in rare spices and tobaccos. He purchased a vile but expensive Venusian cigar. He lighted and drew upon it with evident relish.

"Ah, we do not find these often in Roktol!" he said to the proprietor, naming a city far to the north. "Turibek has its advantages after all."

"You are a stranger here?"

"Yes, I have just arrived. I am a buyer for Varik's." He saw the man was impressed. "I find Turibek a fascinating city, but tell me—the high wall to the east of here—what is it? They would not allow me to pass!"

"And no wonder, sir. Those walls surround the palace grounds and laboratories of our Emperor!"

"To be sure! I should have known that." Ketrik smiled, and when he spoke again there was the slightest hint of mockery. "Ah, but you of Turibek should be flattered that our Emperor chose your city to carry on his noble experiments."

The man hesitated, glanced around, but decided to speak. "I think you know we are not fortunate, sir. What Dar Vaajo is doing may be for the best ... but if only we were informed!"