That was deliberate; it was the one thing I had thought about.

I drove past, took the next left, went round the block, and parked on the far side of a chain-link fence about a hundred and thirty yards away, with a stack of pallets between me and the lot.

Then I got out and I walked, because I could not see anything from the car.

By the time I had a view, Nell was already out of the SUV and standing up and holding her grandmother’s hand, and Corinne was knocking on the steel door — a specific knock, two and then two, which I have thought about more than almost any other detail in this account, because a knock like that means you have done it before.

The door opened.