That September it seemed that passion everywhere, already smouldering like a rotten fuse-box, was easily ignited, and I wished that the hot blood of Sudeten Germans in Czechoslovakia could have been as easily dealt with as was my own excitation.

As a bull you learn to expect an increase in crime during hot weather. In January and February even the most desperate criminals stay home in front of the fire.

Reading Professor Berg’s book, The Sadist, later on that same day, I wondered how many lives had been saved simply because it was too cold or too wet for Kürten to venture out of doors, Still, nine murders, seven attempted murders and forty acts of arson was an impressive enough record.

According to Berg, Kürten, the product of a violent home, had come to crime at an early age, committing a string of petty larcenies and enduring several periods of imprisonment until, at the age of thirty-eight, he had married a woman of strong character. He had always had sadistic impulses, being inclined to torture cats and other dumb animals, and now he was obliged to keep these tendencies in a mental straitjacket. But when his wife was not at home Kiirten’s evil demon at times grew too powerful to restrain, and he was driven to commit the terrible and sadistic crimes for which he was to become infamous.

This sadism was sexual in its origin, Berg explained. Kürten’s home circumstances had rendered him predisposed to a deviation of the sexual urge, and his early experiences had all helped to condition the direction of that urge.

In the twelve months that separated Kurten’s capture and his execution, Berg had met frequently with Kürten and found him to be a man of notable character and talent. He was possessed of considerable charm and intelligence, an excellent memory and keen powers of observation. Indeed, Berg was moved to remark upon the man’s accessibility. Another outstanding characteristic was Kurten’s vanity, which manifested itself in his smart, well-cared for appearance and in his delight at having outwitted the Dusseldorf police for as long as he had cared to do so.

Berg’s conclusion was not a particularly comfortable one for any civilized member of society: Kürten was not mad within the terms of Paragraph Fifty-one, in that his acts were neither completely compulsive nor wholly irresistible, so much as pure, unadulterated cruelty.

If that wasn’t bad enough, reading Baudelaire left me feeling as comfortable in my soul as a bullock in an abattoir. It didn’t require a superhuman effort of imagination to accept Frau Kalau vom Hofe’s suggestion that this rather Gothic French poet provided an explicit articulation of the mind of a Landru, a Gormann or a Kürten.