“I’m afraid we don’t have a canteen,” I said as kindly as I could, considering how impatient Kivrin always makes me, “and it’s not actually a real shelter. Some of the watch sleep in the crypt. I’m afraid we’re all volunteers, though.”

“That won’t do, then,” she said. She dabbed at her eyes with the handkerchief. “I love St. Paul’s, but I can’t take on volunteer work, not with my little brother Tom back from the country.” I was not reading this situation properly. For all the outward signs of distress she sounded quite cheerful and no closer to tears than when she had come in. “I’ve got to get us a proper place to stay. With Tom back, we can’t go on sleeping in the tubes.”

A sudden feeling of dread, the kind of sharp pain you get sometimes from involuntary retrieval, went over me. “The tubes?” I said, trying to get at the memory.

“Marble Arch, usually,” she went on. “My brother Tom saves us a place early and I go…” She stopped, held the handkerchief close to her nose, and exploded into it. “I’m sorry,” she said, “this awful cold!”

Red nose, watering eyes, sneezing. Respiratory infection. It was a wonder I hadn’t told her not to cry. It’s only by luck that I haven’t made some unforgivable mistake so far, and this is not because I can’t get at the long-term memory. I don’t have half the information I need even stored: cats and colds and the way St. Paul’s looks in full sun. It’s only a matter of time before I am stopped cold by something I do not know. Nevertheless, I am going to try for retrieval tonight after I come off watch. At least I can find out whether and when something is going to fall on me.

I have seen the cat once or twice. He is coal-black with a white patch on his throat that looks as if it were painted on for the blackout.