At dusk, Miss Green widened the biggest slit in the bedroom screen a little more and slipped out to do her own kind of shopping, with a section of one of Mel's handkerchiefs to serve as a bag.

Mel left the lights out and stayed at the window. He felt depressed, but didn't quite know why—unless it was that so many odd things had happened since Sunday morning that his mind had given up trying to understand them.

He wasn't really sure now, for example, whether he was getting occasional flash-glimpses of those circular luminous vessels plowing through another dimension somewhere, or whether he was half asleep and imagining it. Usually it was a momentary glow printed on the dark air at the edge of his vision, vanishing before he could really look at it.

He had a feeling they had managed to come a good deal closer during the day. Then he wondered briefly whether other people had been seeing strange light-shapes, too, and what they might have thought the glimpses were.

Spots before their eyes, probably.

Miss Green was back with a soft hum of wings, on the outer window sill, six feet from where he sat. She pushed the knotted scrap of cloth through the screen. There was something inside it now; it caught for a moment on the wires. Mel started up to help, then checked himself, afraid of feeling some bug squirming desperately inside; and while he hesitated, she had shoved it through. She followed it, picked it up again and flew off to the living room. After a moment she returned with the empty cloth and went out again.

She made eight such trips in the next hour, while night deepened outside and then began to lighten as a half-moon shoved over the horizon. Mel must have dozed off several times; at least, he suddenly found himself coming awake, with the awareness that something had just landed with a soft thump on the window sill outside.

It wasn't Miss Green. He saw a chunky shadow at one corner of the window, and caught the faintest glint of green eyes peering into the room. It was the cat from the courtyard.

In the same moment, he heard the familiar faint hum, and Miss Green appeared at the opposite end of the sill.