But at least now he was safe. Surely he was safe? And the wound … well, certainly it was serious, but not fatal. He would survive. He tried to reassure himself of this fact as darkness edged in from all corners of his vision, like ink seeping across blotting paper. Inspector Edward Thornton leaned forward and gazed out of the tiny window of his office in the upper reaches of Scotland Yard. It was a cold November day in 1897 and grey swirls of fog wreathed the adjacent rooftops, reducing them to vague silhouettes. They loomed like giant ghosts, ready to envelop the building. Thornton sighed wearily at this fancy that so easily took his mind from the very difficult matter in hand. Sergeant Grey looked up from the case notes he was scribbling in his crabbed hand. ‘It’s not that Curzon Street business is it, sir?’ Thornton replied without moving. ‘Of course it is, Grey. There is something not quite right about it, but I cannot fathom out what it is.’ ‘I don’t know what you mean.