"IT WAS quite by accident I discovered this incredible invasion of Earth by lifeforms from another planet. As yet, I haven't done anything about it; I can't think of anything to do. I wrote to the Government, and they sent back a pamphlet on the repair and maintenance of frame houses. Anyhow, the whole thing is known; I'm not the first to discover it. Maybe it's even under control.
I was sitting in my easy-chair, idly turning the pages of a paperbacked book someone had left on the bus, when I came across the reference that first put me on the trail. For a moment I didn't respond. It took some time for the full import to sink in. After I'd comprehended, it seemed odd I hadn't noticed it right away."