"There must be more than just one," Weeks said. "But how are we going to hunt them down? With Sinbad?"

Dane shook his head. Once the Hoobat had been caged and the more prominent evidence of the battle scraped from the floor, he had brought the cat into the hydro and forced him to sniff at the site of the engagement. The result was that Sinbad had gone raving mad and Dane's hands were now covered with claw tears which ran viciously deep. It was plain that the ship's cat was having none of the intruders, alive or dead. He had fled to Dane's cabin where he had taken refuge on the bunk and snarled wild eyed when anyone looked in from the corridor.

"Queex has to do it," Rip said. "But will it hunt unless it is hungry?"

He surveyed the now comatose creature skeptically. They had never seen the Captain's pet eat anything except some pellets which Jellico kept in his desk, and they were aware that the intervals between such feedings were quite lengthy. If they had to wait the usual time for Queex to feel hunger pangs once more, they might have to wait a long time.

"We should catch one alive," Ali remarked thoughtfully. "If we could get Queex to fiddle it out to where we could net it—"

Weeks nodded eagerly. "A small net like those the Salariki use. Drop it over the thing—"

While Queex still drowsed in its cage, Weeks went to work with fine cord. Holding the color changing abilities of the enemy in mind they could not tell how many of the creatures might be roaming the ship. It could only be proved where they weren't by where Sinbad would consent to stay. So they made plans which included both the cat and the Hoobat.

Sinbad, much against his will, was buckled into an improvised harness by which he could be controlled without the handler losing too much valuable skin.

And then the hunt started at the top of the ship, proceeding downward section by section. Sinbad raised no protest in the control cabin, nor in the private cabins of the officers' thereabouts. If they could interpret his reactions the center section was free of the invaders. So with Dane in control of the cat and Ali carrying the caged Hoobat, they descended once more to the level which housed the hydro galley, steward's quarters and ship's sick bay.

Sinbad proceeded on his own four feet into the galley and the mess. He was not uneasy in the sick bay, nor in Mura's cabin, and this time he even paced the hydro without being dragged—much to their surprise as they had thought that the headquarters of the stowaways.