Ours is a very sedate life. We don't go out much, we rarely drink more than wine, and neither of us has ever used drugs. From 1977 until 1983 I wrote imaginative thrillers, but in recent years I had been concentrating on much more serious fiction about peace and the environment, books that were firmly grounded in fact. Thus, at this time in my life, I wasn't even working on horror stories, and at no time had I ever been in danger of being deluded by them.

We were having a lovely Christmas at the cabin in late December 1985. On Christmas Eve there was snow, which continued for two more days. My son had discovered to his delight that the snow would fall in perfect crystalline flakes on his gloves if he stood still with his hands out.

On December 26 we spent a happy morning breaking in his new sled, then went cross-country skiing in the afternoon. For supper we had leftover Christmas goose, cranberry sauce, and cold sweet potatoes. We drank seltzer with fresh lime in it. After our son went to bed, Anne and I sat quietly together listening to some music and reading.

At about eight-thirty I turned on the burglar alarm, which covers every accessible window and all the doors. For no reason then apparent, I had developed an unusual habit the previous fall. As secretly as ever I made a tour of the house, peering in closets and even looking under the guest-room bed for hidden intruders. I did this immediately after setting the alarm. By ten o'clock we were in bed, and by eleven both of us were asleep.

The night of the twenty-sixth was cold and cloudy. There were perhaps eight inches of snow on the ground, and it was still fang lightly.

I do not recall any dreams or disturbances at all. There was apparently a large unknown object seen in the immediate vicinity at approximately this time of month, but a report of it would not be published for another week. Even when I read that report. though, I did not relate it in any way to my experience. Why should I? The report attributed the sightings to a practical joke. Only much later, when I researched it myself, did I discover how inaccurate that report was.

I have never seen an unidentified flying object. I thought that the whole subject had been explained by science. It took me a couple of months to establish the connection between what had happened to me and possible nonhuman visitors, so unlikely did such a connection seem.

In the middle of the night of December 26-I do not know the exact time-I abruptly found myself awake. And I knew why: I heard a peculiar whooshing, swirling noise coming from the living room downstairs. This was no random creak, no settling of the house, but a sound as if a lame number of people were moving rapidly around to the room.