Try it yourself. Assemble a handful of chaps of pensionable age – because these will be men whose voices were wavering between treble and tenor in the 1950s – and ask them if they remember the name Hank Janson. I guarantee you an interesting reaction – first the joy of slowly dawning recognition, then a shifty flush of guilt as they realize why they remember it so well. During the Fifties Hank Janson was by far the most famous writer of sexy books in Britain. These days, young men have sex education. Then, ten years after the war, we had Hank.