Jack twisted around to look, but there was nothing there. The dragon head had disappeared from his shoulder, but out of the corner of his eye he could just see the tip of the snout further around on his back. "I am a poet-warrior of the K'da. Who are you?"

"I'm Jack Morgan," Jack said, his voice starting to shake again. Now for the big question. "Where are you?"

"Tell me first how you came to be aboard my ship," Draycos said. "Are you an enemy of the K'da and Shontine?"

"I'm not an enemy of anyone," Jack protested, scrambling back to his feet. "I saw your ship go down, and I came to check it out. That's all."

"Did you see our attackers?" The voice, Jack noted uneasily, moved with him, still tingling his shoulder.

"Well..." Jack hesitated, wondering how much to say. "We saw the battle," he said. "It looked like the guys in the little ships went aboard the big ones afterward. Are there more of your people up there?"

There was a soft sigh, even more snakelike than the voice. "They were my people," Draycos said. "They are all dead now."

"We don't know that," Jack said, feeling an obscure urge to be comforting. "Those Djinn-90s can't have had that many soldiers to put aboard."

"There is no one left to fight them," the dragon said sadly. "The K'da and Shontine were already dead."

"All of them?" Uncle Virge's voice asked, sounding surprised.

"All of them," Draycos said. "The weapon that was used against us kills all that it touches. It does not leave survivors."

Jack thought back to the purple tornadoes he'd seen playing against the freighters' sides. A weapon that killed right through hull plates? "What about you?" he asked. "You survived."

"An unintended mercy," Draycos said. "We were already falling, and they thought merely to save themselves further effort."

Jack took a deep breath. It was pretty obvious by now what was going on. He still hoped he was wrong; but right or wrong, it was time to take the plunge and find out for sure. "You're on my back, aren't you?" he asked. "Wrapped around me like a—well, like a thin sheet of plastic."

"Yes," Draycos said.

"You're what?" Uncle Virge demanded. "You're where?"

"It's like he's a picture painted there," Jack said. "Or a full-body tattoo, like you see sometimes on Zhandig music stars."

"What do you mean, like a tattoo?" Uncle Virge said, sounding every bit as bewildered as Jack felt. "How can something alive be like a tattoo?"

"What, you think I know?" Jack shot back. "Look, if I could explain it—"

"Please," Draycos cut in. "Permit me." Jack looked down. The dragon's head had slid back into view on his shoulder and was turning back and forth as if looking for something. "There," Draycos said. "That data reader."

"Where?" Jack asked, frowning at the debris.

A second later he jumped again as a sudden bit of extra weight came onto the back of his right arm, and a gold-scaled limb unexpectedly rose up out from that spot. A short finger or toe or whatever it was extended from the paw, pointing to a small flat instrument about three inches square lying among the debris on the deck. "There," Draycos said. "Go and kneel down beside it."

Swallowing, Jack obeyed. This was the very spot, he noted uneasily, where the dragon had been crouching when he came in. Could this thing be a weapon? "Now what?"

"I will give you a picture of what I am," Draycos said. "Do you see how the reader lies on the deck? Where they meet, the reader is a two-dimensional object. Do you agree?"

"Well, no, it's three-dimensional," Jack said. "It has length, width, and thickness."

"But it is two-dimensional where it meets the deck," Draycos repeated. "At that meeting, it has only length and width. Do you agree?"

Jack shrugged. "Fine. Whatever you say."

"It is not a matter of what I say," Draycos said, sounding impatient. "It is a matter of whether you understand. Consider the deck to be a two-dimensional universe, with the data reader as a two-dimensional object existing within it. There is no thickness there, only length and width. Two dimensions only. Do you understand?"

"I understood before," Jack said, a little impatience of his own starting to peek out through the heavy curtain of weirdness hanging over this whole thing. Having not been killed and eaten on the spot, he was starting to lose some of his initial fear, and he had better things to do than play word games with this Draycos character. "So what?"

"Very well," Draycos said. "Now lift the data reader so that one edge remains on the deck."

Jack did as instructed. "Okay. So?"

"In this picture, the data reader is still two-dimensional," Draycos said. "Yet to an observer within the two-dimensional universe of the deck, it now appears as a one-dimensional portion of a line. It has length only, but no width. The part that would give it width has lifted away along a third dimension."

Jack stared down at the reader, a funny tingling sensation creeping across the skin at the back of his neck. Was Draycos saying what he thought he was saying? "Are you trying to tell me," he asked slowly, "that you're really three-dimensional, but that you somehow became two-dimensional? Just plain flat? And then that you somehow pasted yourself across my back?"

"I am still three-dimensional," Draycos said. "As with the data reader, most of my body is now projected along a fourth dimension, outside the bounds of this universe."

On Jack's left shoulder, the comm clip had gone silent. Apparently, even Uncle Virge couldn't think of anything to say to this one. That was a bad sign. "No," Jack said. "Sorry, but this doesn't make any sense at all."

"Yet I am here," Draycos reminded him.

"No," Jack said firmly. He turned his eyes away to the left, away from the dragon head staring up at him from his right shoulder. "This isn't real. It can't be real. It's some kind of trick."

"Why would I wish to trick you?" Draycos asked, sliding around Jack's back to his left shoulder and again looking up at him. "What purpose would it serve?"

"Stop doing that!" Jack snapped, twisting his head back the other way. Reaching around, he pulled the hanging sleeve back around and got his right arm into it. "I don't know why. What purpose does anything serve? What do you want?"

"I want that which all beings desire," Draycos told him. "Life."

"And what, you can't live anywhere except my back?" Jack demanded sarcastically.

"No," Draycos said. "I cannot."

Jack had been about to fasten his shirt's sealing strip again. Now he paused, frowning down at the gold scales on his chest. "What do you mean?"

"The K'da are not like other beings, Jack Morgan," the dragon said. "We cannot run freely for longer than six of your hours at a time. After that we must return to this two-dimensional form and rest against a host body."

"Or?" Jack prompted.

"If we do not have a host, we fade away and die," Draycos said. "I was nearly dead when you appeared. Your arrival, plus the fortunate fact that your species is able to serve as a K'da host, has saved my life. For this I thank you."

"You're welcome," Jack said automatically. "Not like I had a choice. So, what, you're some kind of parasite?"

"I do not know that word."

"A parasite is something that feeds off its host organism," Jack explained. "It takes food or something else it needs from the host."

"I take nothing from my host," Draycos said. "I must use the surface of my host's body, but that is all."

"You take away his privacy," Jack pointed out.

"I offer companionship and protection in return," Draycos said. "For that reason, we consider ourselves to be symbionts with our hosts, not... parasites. But perhaps you do not consider that a fair exchange. Does your species require more loneliness than I understood?"