Balanced on his only leg, he wrenched the dial on the shower clockwise and allowed the icy water to pummel him awake, cooling his puffy eyes and raising gooseflesh through the dark hair on his chest, arms and legs. The one good thing about his tiny shower was that, if he slipped, there was no room to fall. Once clean, he hopped back to the bedroom, where he toweled himself roughly and turned on the TV.

The royal wedding would take place the following day and the preparations dominated every news channel he could find. While he strapped on his prosthesis, dressed and consumed tea and toast, presenters and commentators kept up a constant, excitable stream of commentary about the people who were already sitting out in tents along the route and outside Westminster Abbey, and the numbers of tourists pouring into London to witness the ceremony. Strike turned off the television and headed downstairs to the office, yawning widely and wondering how this multimedia barrage of wedding talk would be affecting Robin, whom he had not seen since the previous Friday, when the Jack Vettriano card containing a grisly little surprise had arrived.

In spite of the fact that he had just finished a large mug of tea upstairs, Strike automatically switched on the kettle when he arrived in the office, then put down on Robin’s desk the list of strip joints, lap-dancing clubs and massage parlors he had begun compiling in his few free hours. When Robin arrived, he intended to ask her to continue researching and telephoning all the places she could find in Shoreditch, a job she could do safely from her own home. If he could have enforced her cooperation, he would have sent her back to Masham with her mother. The memory of her white face had haunted him all week.

Stifling a second enormous yawn, he slumped down at Robin’s desk to check his emails. In spite of his intention to send her home, he was looking forward to seeing her. He missed her presence in the office, her enthusiasm, her can-do attitude, her easy, unforced kindness, and he wanted to tell her about the few advances he had made during his dogged pursuit of the three men currently obsessing him.

He had now notched up nearly twelve hours in Catford, trying to glimpse Whittaker entering or leaving his flat over the chip shop, which stood on a busy pedestrian street running along the rear of the Catford Theatre. Fishmongers, wig shops, cafés and bakeries curved around the perimeter of the theater, and each had a flat above it boasting three arched windows in triangular formation. The thin curtains of the flat where Shanker believed Whittaker to be living were constantly closed. Market stalls filled the street by day, providing Strike with useful cover. The mingled smells of incense from the dream-catcher stall and the slabs of raw fish lying on ice nearby filled his nostrils until he barely noticed them.

For three evenings Strike had watched from the stage door of the theater, opposite the flat, seeing nothing but shadowy forms moving behind the flat’s curtains. Then, on Wednesday evening, the door beside the chip shop had opened to reveal an emaciated teenage girl.