Her overnight drawing efforts numbered eight. Four of them were the interior of her room and another of her and her husband on the beach with the parasol but seen from behind them. There was one of the interior of the basement car park depicting her first encounter with the other nightwalkers, and two others were general scenes of the town: the main square in Summer with the Wincarnis in the background and another of the bridge over the river, water running freely, but still with an articulated lorry stuck fast – only a different one, not the lorry stuck there now. It must be a regular feature of the town.

I placed the pictures on top of the wardrobe with the others and then, once Birgitta had risen out of torpis, fed her the taramasalata and toothpaste sandwich, and when that wasn’t quite enough, a large bowl of muesli.

Once I’d finished feeding her breakfast, I made sure she had access to pens and paper before leaving and locking the door behind me.

I had inventoried all my remaining food and figured I would probably run out tomorrow evening. I would be the first item on the menu when she got hungry, and if she couldn’t eat me, she’d either starve or try to escape – and that would be one more whole heap of trouble to deal with.

I headed off towards the elevator but stopped at the door to the apartment next to mine, room 902. It would be unoccupied, turned upside-down if the occupants were dead but still in residence, and removed completely once the corpse was removed. This room, I knew, was vacant. And since most ninth-floorers seemed to have blue-Buicked in some form or another – Moody, Roscoe, Suzy Watson, Birgitta, Porter Lloyd – it seemed prudent to have a look inside. Unaccountably, I suddenly felt a nervous knot that sat low in my stomach. A portent, if you like. The same thing I’d felt when going to repo Mrs Tiffen.

My Omnikey turned easily in the lock and the door opened on well-oiled hinges. But it wasn’t unoccupied, it was abandoned: the blinds were down, the mattress rolled up and tied with a cord. There was no furniture, blankets, food or carpets. The only thing in the room was a large steamer trunk pushed against our shared wall, the sort of thing roving hibernators used when travelling away to Longsleep. Unusually, the lock was pre-Omnilock, which dated the trunk from before 1931. Not illegal to own, as it was pre-legislation, but unlawful to lock and unlock – a legal peculiarity.