He was supposed to examine the skin surface for irritation every day. Now he saw that the scar tissue was inflamed and over-warm. There had been various creams and powders back in the bathroom cabinet at Charlotte’s dedicated to the care of this patch of skin, subject as it was these days to forces for which it had not been designed. Perhaps she had thrown the corn powder and Oilatum into one of the still unpacked boxes? But he could not muster the energy to go and find out, nor did he want to refit the prosthesis just yet; and so he sat smoking on the sofa with the lower trouser leg hanging empty towards the floor, lost in thought.

His mind drifted. He thought about families, and names, and about the ways in which his and John Bristow’s childhoods, outwardly so different, had been similar. There were ghostly figures in Strike’s family history, too: his mother’s first husband, for instance, of whom she had rarely spoken, except to say that she had hated being married from the first. Aunt Joan, whose memory had always been sharpest where Leda’s had been most vague, said that the eighteen-year-old Leda had run out on her husband after only two weeks; that her sole motivation in marrying Strike Snr (who, according to Aunt Joan, had arrived in St Mawes with the fair) had been a new dress, and a change of name. Certainly, Leda had remained more faithful to her unusual married moniker than to any man. She had passed it to her son, who had never met its original owner, long gone before his unconnected birth.

Strike smoked, lost in thought, until the daylight in his office began to soften and dim. Then, at last, he struggled up on his one foot and, using the doorknob and the dado rail on the wall beyond the glass door to steady himself, hopped out to examine the boxes still stacked on the landing outside his office. At the bottom of one of them he found those dermatological products designed to assuage the burning and prickling in the end of his stump, and set to work to try and repair the damage first done by the long walk across London with his kitbag over his shoulder.

It was lighter now than it had been at eight o’clock two weeks ago; still daylight when Strike was seated, for the second time in ten days, in Wong Kei, the tall, white-fronted Chinese restaurant with a window view of an arcade centre called Play to Win. It had been extremely painful to reattach the prosthetic leg, and still more to walk down Charing Cross Road on it, but he had disdained the use of the grey metal sticks he had also found in the box, relics of his release from Selly Oak Hospital.