The sight of those sightless eyes, the fixed smile and the carving knife brought me out in a cold sweat

‘Drop that knife, Barratt!’ I rapped out, and began to back away in search of a weapon.

He came on, slowly, rather like a sleep-walker, and I knew I should have to stop him before he cornered me. I made a sudden dive for the bed, grabbed up a pillow and flung it at him. It hit him in the face, sending him staggering, and I jumped for a chair, snatched it up as he came charging at me.

He ran slap on to the legs of the chair as I poked it at him. The collision sent both of us staggering, and as I recovered my balance and lifted the chair to hit him over the head, the girl jumped on my back, twining her arms round my throat, choking me.

I was getting rattled now and slammed against the wall with her as Barratt stabbed at me. I saw the flash of the knife and let out a yell, throwing myself sideways,

I and the girl sprawled on the floor. She was still clinging to me and her grip round my throat was making the blood hammer in my head.

I tore her hands away as Barratt bent over me. I thought I was a goner. I kicked out wildly, missed him, saw the blade flash up. I tried to roll clear, but knew it couldn’t be done. The girl under me was holding me. I couldn’t get my arms free; I couldn’t turn. The blade was aimed for my belly when there was a rush of feet; Barratt half turned, the knife thudded down into the floor an inch from my body; a short, square-shouldered man who had appeared from nowhere hit Barratt savagely on the head with what looked like a sandbag.

Barratt arched his back, shot away from me and dropped down on hands and knees. He tried to rise, flattened out, dragged himself to a half-sitting position as the square-shouldered man sprang at him and hit him again.

All this took about five seconds. The girl was still trying to strangle me and now she started to scream. I rolled over on my face, bringing her uppermost. I felt her being wrenched away and I staggered to my feet, as, screaming wildly, she flew at the square-shouldered man, her fingers clawing at his face.

He stood his ground, swept her hands away and hit her very hard on the temple with the sandbag. She dropped at his feet as if she had been pole-axed