For all her weight, the landlady moved swiftly across the room and crouched down to grip Della’s exposed ankle. With her other hand she threw the bedclothes aside. Her mouth opened to scream, but no sound came; she lost her balance and fell, landing on her backside. In a panic she crawled to the door, dragging herself up by the open drawer of a tallboy. Bottles and pots of make-up crashed to the floor as her scream finally surfaced. Mrs. Salbanna screamed and screamed . . .

By the time Detective Chief Inspector John Shefford arrived the house in Milner Road, Gray’s Inn, had been cordoned off. He was the last on the scene; two patrol cars were parked outside the house and uniformed officers were fending off the sightseers. An ambulance stood close by, its doors open, its crew sitting inside, drinking tea. The mortuary van was just drawing up and had to swerve out of the way as Shefford’s car screeched to a halt just where its driver had intended to park. Shefford’s door crashed open as he yanked on the handbrake. He was on the move, delving into his pocket for his ID as he stepped over the cordon. A young PC, recognizing him, ushered him up the steps to the house.

Even at two thirty on a wintry Sunday morning, word had got round that a murder had been committed. There were lights in many windows; people in dressing-gowns huddled on their front steps. A couple of kids had appeared and were vying with each other to see how close they could get to the police cordon without breaking through it. Five Rastafarians with a ghetto-blaster were laughing together on a nearby wall, calling out remarks and jokes, as if it was a street party.

Shefford, a bear of a man at six foot two, dwarfed those around him. He had been notorious on the rugby field in the late seventies, when he played for England. With his curly hair standing on end, his crumpled shirt and tie hanging loose he didn’t look or feel in a fit state to start an investigation. He had been hauled out of the celebration bash at the end of a long and tedious murder case, and he was knackered. Now he was about to lead the investigation of another murder, but this one was different.

Many of the officers in the dark, crowded hallway he had worked with before. He scanned the faces as his eyes grew accustomed to the darkness. He never forgot a face, and he greeted each man he knew by name.

At the foot of the stairs he hesitated a moment, straightening his tie. It wasn’t like him to shrink from an unpleasant duty, but he had to force himself to mount each step. He was sweating. Above the confusion of voices a high-pitched wailing could be heard. It seemed to be coming from the direction of the basement.