The camera panned out and the screen suddenly went black. Tina’s mouth was dry and she was conscious that she was rubbing her hands together with such force that it was almost painful. She needed a drink. More than she’d needed one in ages. A bottle of good Rioja with a couple of vodka chasers. Anything just to forget about all this.

The screen lit up again, and this time the camera had been placed in a fixed position about three feet away from Adrienne’s head, and slightly above it — most likely on a bedside table. Tina couldn’t remember if Adrienne had had a bedside table or not. Her head swung from side to side, the moans loud beneath the gag. There was music playing in the background. ‘Beautiful Day’ by U2. Only just audible. Tina would never be able to listen to that song again without being reminded of Adrienne Menzies’ bloody murder.

The hammer came out of nowhere, striking Adrienne full in the face, only the head and the top of the handle visible.

Tina flinched and turned away. She’d seen some terrible things in her career, including a young woman being shot dead in front of her, but this was somehow worse, because it felt sickeningly voyeuristic, almost as if she was giving the killer her tacit support by watching.

She could hear the crunching sound of the hammer as it struck Adrienne again and again, but it wasn’t that sound that Tina would remember. It was the rasping, gurgling wail of pain and terror that Adrienne made in time with her tortured but surprisingly deep breathing as she lay dying.

Tina forced herself to turn back, knowing that it was part of her job to view the evidence. She kept her eyes rigidly on the screen, her world reduced to this laptop and the savagery being played out on it.