Robert loved to watch the seasons revolve in Highgate. The cemetery was never without some green; many of the plants and trees had symbolised eternal life to the Victorians, and so even in winter the haphazard geometry of the graves was softened by evergreens, cypress, holly. At night stone and snow reflected back moonlight, and Robert sometimes felt himself become weightless as he crunched along the paths through a thin coverlet of white. Occasionally he brought a ladder from Vautravers’ garden shed and climbed up to the grass in the centre of the Circle of Lebanon. He would lean against the three-hundred-year-old Cedar of Lebanon, or lie on his back and watch the sky through its gnarled branches. There was seldom a visible star; they were all hidden by light pollution from London’s electric grid. Robert watched aeroplanes blinking through the Cedar of Lebanon’s leaves. At such times he felt a powerful sense of rightness: under his body, beneath the grass, the dead were quiet and peaceful in their little rooms; above him the stars and machines roamed the skies.

Tonight he stood by the Rossettis and thought about Elizabeth Siddal. He had rewritten the chapter devoted to her numerous times, more for the pleasure of thinking about Lizzie than because he had anything new to say about her. Robert fondled her life’s trajectory in his mind: her humble beginnings as a milliner’s girl; her discovery by the Pre-Raphaelite painters, who enlisted her as a model; her promotion to adored mistress of Dante Gabriel Rossetti. Unexplained illnesses, her long-awaited marriage to Rossetti; a stillborn daughter. Her death by laudanum poisoning. A guilt-ridden Dante Gabriel, slipping a unique manuscript of his poems into his wife’s casket. Seven years later, the exhumation of Lizzie at night, by bonfire light, to retrieve the poems. Robert relished all of it. He stood with his eyes closed, imagining the grave in 1869, not so hemmed in by other graves, the men digging, the flickering light of the fire.

After what seemed to him a long time, Robert followed the obscure path back through the graves and began to wander.

He was unable to believe in heaven. In his Anglican childhood he had imagined a wide, spacious emptiness, sunlit and cold, filled with invisible souls and dead pets. As Elspeth began dying he’d tried to revive this old belief, digging into his scepticism as though belief were simply an older sediment, accessible through strip-mining layers of sophistication and experience. He reread Spiritualist tracts, accounts of hundred-year-old seances, scientific experiments with mediums. His rationality rebelled. It was history; it was fascinating; it was untrue.

On these nights in the cemetery Robert stood in front of Elspeth’s grave, or sat on its solitary step with his back against the uncomfortable grillwork. It did not bother him when he stood by the Rossetti grave and couldn’t feel the presence of Lizzie or Christina, but he found it disturbing to visit Elspeth and find that she was not “at home” to him. In the early days after her death he’d hovered around the tomb, waiting for a sign of any sort. “I’ll haunt you,” she’d said when they’d told her she was terminal. “Do that,” he had replied, kissing her gaunt neck. But she was not haunting him, except in memory, where she dwindled and blazed at all the wrong moments.

Now Robert sat at Elspeth’s doorstep and watched as dawn came over the trees. He could hear the birds stirring, singing, rioting and splashing across the street in Waterlow Park. Every now and then a car whooshed past along Swains Lane. When there was enough light for him to read the inscriptions on the graves across from Elspeth, Robert got up and made his way towards the back of the cemetery and the Terrace Catacombs. He could see St. Michael’s, but Vautravers was invisible beyond the wall. He walked up the steps at the side of the Terrace Catacombs and across the Catacombs’ roof to the green door. Fatigue clutched him. It was an effort to make it all the way into his flat before sleep overtook him. Outside, the cemetery assumed its daytime aspect; dawn gave way to day, the staff arrived, phones rang, the natural and the human worlds spun on their separate but conjoined axes. Robert was asleep in his clothes, his muddy trainers beside the bed. When he presented himself, noonish, at the cemetery’s office, Jessica said, “My dear boy, don’t you look all in. Have some tea. Don’t you ever sleep?”

LONDON WAS baking under a cloudless July sky. Robert reclined on a decrepit wicker chaise longue in Jessica Bates’s back garden, a gin and tonic sweating in his hand. He was watching Jessica’s grandchildren preparing to play croquet. It was Sunday afternoon. He had a vague sense of being in the wrong place; usually he and Jessica would both have been at the cemetery. On a glorious Sunday like this there would be loads of tourists clustered at the gates, wielding cameras and protesting at the rules about proper attire and no water bottles. They would be whingeing about the £5 charge for the tour and pointlessly insisting on bringing in prams and children under eight. But for some reason today there had been extra guides, and he and Jessica had been sent off with orders from Edward to “amuse yourselves, we’ll be fine here, don’t even think about us.” So now Jessica, who was eighty-four and incapable of leisure, was in her kitchen putting together lunch for twelve, and Robert (who had offered to help and been firmly escorted outside) lay idly watching as the children pounded the hoops and stake into the ground.

The grass was too long for croquet, but no one seemed to mind. “I wanted to get some sheep to crop the grass, but Jessica overruled me,” said James Bates. Jessica’s husband sat tucked into his lawn chair with a thin blanket; it made Robert hotter just to look at him. He was a tall man who had shrunk with age, and his gentle voice trembled a bit. He had large glasses that magnified his eyes, frail bones and a decisive manner. He had been a headmaster and now served as the cemetery’s archivist.

James gazed at his grandchildren fondly. They were bickering over the rules and trying to choose teams. He longed to get out of his chair, to walk across the lawn and play with them. He sighed and looked down at the book of crosswords in his lap. “This is quite ingenious,” he said, turning the page towards Robert. “All the clues are mathematical equations, then you translate the answers into letters and fill it in.”

“Ugh. Is that one of Martin’s?”

“Yes, he gave it to me for Christmas.”

“Sadistic devil.”

The children had arranged themselves around the first hoop and began to knock the coloured balls through it. The bigger children waited patiently for the smallest child to make her shot. “Well played, Nell,” said the tallest boy. James pointed his pen at Robert. “How are you getting on with Elspeth’s estate?”

A small feud erupted between two cousins over a ball hit out of bounds. Robert’s mind returned to Elspeth, who was never far from his thoughts. “Roche is corresponding with the twins. Elspeth’s sister was threatening to contest the will, but I think Roche has convinced her she’d lose. It must be something about America, this urge to litigate.”

“I still find it curious that Elspeth never mentioned having a twin.” James smiled. “It’s hard to imagine another one like her.”

“Yes…” Robert watched the children decorously tapping the balls across the lawn. “Elspeth said she and Edie weren’t very much alike in their personalities. She used to just hate being mistaken for her. Once we were in Marks & Spencer and this woman walked up to Elspeth and started chatting away, and it turned out that she was the mother of some boy Edie had gone out with. Elspeth was quite awful to her. The woman went off in a huff, and Elspeth had this rather puffed-up look about her, like one of those Brazilian frogs that get very large and spit at things that want to eat them.”