They sat a while in the soft warm darkness. Kirk's thoughts were more and more gloomy. They couldn't wait here forever, yet he had to make contact as Ferdias had ordered-- Strange, glowing little sparks of light drifted across his vision, and now he became aware that the whole dark yard and woods were swarming with such floating sparks. They winked on and off, in a fashion he had never seen, dancing and whirling under the dark trees. "What are they?" asked Lyllin, fascinated. "Fireflies?" Kirk said doubtfully. "I remember that word, from somewhere...." Then he suddenly started and exclaimed, "Hell, what--" A small sinuous body had suddenly plopped into his lap. Two green eyes looked insolently up at him. It was the cat. "It's very tame," said Lyllin. "It must have been somebody's pet." "Probably belonged to the last people who lived here," Kirk said. "It's tame, all right." He stroked its furry back. The cat half-closed its eyes and emitted a rusty purring sound. "Like that, eh, Tom?" Tom settled down cozily, in answer. Lyllin reached to stroke its head. With startling swiftness, the cat recoiled from her and leaped off Kirk's lap. It stared green-eyed back at them, then started across the lawn. Kirk turned, laughing. "Crazy little critter--" He stopped suddenly. "Lyllin, what's the matter?" She was crying and he had rarely seen her cry. "Did it scratch you?" "No. But it feared me, and hated me," she said. "Because it knew I'm alien." Kirk said, "Oh, rot. The wretched beast is just afraid of strangers." "It wasn't afraid of you. It sensed that I'm different--" He put his arm around her, mentally cursing Tom. Then, as he wrathfully looked after the cat, Kirk stiffened. Tom had started across the lawn toward the dark brush nearby. But the cat had stopped. And, as Kirk looked, Tom suddenly emitted a hiss and recoiled. It went away from the dark clumps, in long swift leaps. Kirk's thoughts raced. The cat had recoiled from that brush, exactly as it had recoiled from Lyllin. For the same reason? Because someone alien, not of Earth, was in those shadows? He thought he could hear a slight sound, and his muscles suddenly strung tight. Ferdias' agent wouldn't approach so secretly. Non-Earthmen skulking in those shadows meant only one thing. He said, "Come on in the house and forget it, Lyllin. I could stand another drink--" But instantly, when inside the house, Kirk made a lunge toward the nearest bedroom and grabbed for the blankets there. He tossed one of the blankets to Lyllin with frantic speed. "Wrap it around your head--_quick_!" She was intelligent. But she was not used to obeying orders instantly and without question "Kirk, what--" He grabbed the blanket out of her hands and started wrapping it many times around her head, speaking in a whisper as he did so. "Out there. Someone. If they want to be quiet about it, they're sure to use a sonic knockout-beam. _Hurry_--" * * * * *