As the hours pass, the condition of the bodies worsens. At least the fire services have got them electricity in time for the diminishing light. Sometimes, all William has to take outside is a scrap of fabric, a hair bobble, a shoe. Yet it doesn’t take much to send a mother’s body lurching towards him, saved and destroyed in the same second. These eagle-eyed, hungry-hearted mothers could identify their children by a single fingernail.

When William has to walk onto the street and ask whose little girl has blonde hair, three sets of parents come forward. And possibly, these are the worst moments, when they approach the body with dread and fear that William can taste, and then realise it isn’t their daughter after all. He understands, after the last seven hours, the relief and comfort of knowing at last where their child is and that no further harm can come to them. What an appalling world he’s in, where the lucky ones are those able to identify their child’s dead body.

It’s raining again. The road hisses at squelching lorry tyres. Pellets of rain seem flung down on the chapel roof. Nineteen years old, freshly graduated from the Thames College of Embalming, with top marks for every piece of practical and written work, William looks at what’s left of the little girl who he’s just found out is called Valerie, and realises none of it counts for anything, not a thing, unless here and now he can do his job and prepare this child’s broken body for her parents, who are right now standing on the wet pavement outside.

In ordinary times, the room he stands in is a chapel vestry, but this is no ordinary time and William is blind to its details; the sloping pile of black bibles in the corner, the tatty kneelers stacked by the door, the deep smell of the dark wood wrestling with the cool whiff of formaldehyde, or the piles of small coffins against the back wall. Oblivious to it all, William finds himself transfixed by an unbidden memory, sharp as the scalpel in his hand.

Woken from his afternoon nap by the buttery fug of baking thickening the air in their flat, William drags his blanket into the kitchen to snuggle into the old armchair and watch his mother. Warmth washes over his legs as she reaches into the oven, pulling out the wonky old baking tray and laying it on the melamine table. She slides the palette knife under the largest biscuit, puts it on a china saucer and cuts it in half. Together they watch the rising coil of steam. ‘For his Lordship.’ She gives a deep curtsy, holding the saucer in both hands. The gold leaf on its border glints at him, and his sleep-soft face lifts into a smile as he reaches out to take it. ‘Don’t burn your mouth,’ she whispers.