Until that night.

In the morning I called the county records office and asked about that genetic sample.

The clerk searched the system for a long time.

Then she asked, carefully, whether I was certain I had never requested to have my sample withdrawn.

I told her I had never made any such request in my life.

There was a long silence on the line.

“That’s very strange,” she said at last, “because there’s a signed application right here in your file, requesting exactly that.