"And what is a run?"

"So they have not yet briefed you? Well, a run is a little jaunt back into history—not nice comfortable history such as you learned out of a book when you were a little kid. No, you are dropped back into some savage time before history——"

"That's impossible!"

"Yes? You saw those two big blond boys tonight, did you not? Why do you suppose they sport those braids? Because they are taking a little trip into the time when he-men wore braids, and carried axes big enough to crack a man open! And Hodaki and his partner.... Ever hear of the Tartars? Maybe you have not, but once they nearly overran most of Europe."

Ross swallowed. He now knew where he had seen braids pictured on warriors—the Vikings! And Tartars, yes, that movie about someone named Khan, Genghis Khan! But to return into the past was impossible.

Yet, he remembered the picture he had watched today with the wolf slayer and the shaggy-haired man who wore skins. Neither of these was of his own world! Could Kurt be telling the truth? Ross's vivid memory of the scene he had witnessed made Kurt's story more convincing.

"Suppose you get sent back to a time where they do not like strangers," Kurt continued. "Then you are in for it. That is what happened to Hardy. And it is not good—not good at all!"

"But why?"

Kurt snorted. "That they do not tell you until just before you take your first run. I do not want to know why. But I do know that I am not going to be sent into any wilderness where a savage may run a spear through me just to prove something or other for Major John Kelgarries, or for Millaird either. I will try my plan first."

The urgency in Kurt's protest carried Ross past the wavering point. He, too, would try the cat. He was only familiar with this time and world; he had no desire to be sent into another one.