"when i arrived at the house," continued holmes, "i at once went very carefully round it to observe if there were any traces in the snow which might help me. i knew that none had fallen since the evening before, and also that there had been a strong frost to preserve impressions. i passed along the tradesmen’s path, but found it all trampled down and indistinguishable. just beyond it, however, at the far side of the kitchen door, a woman had stood and talked with a man, whose round impressions on one side showed that he had a wooden leg. i could even tell that they had been disturbed, for the woman had run back swiftly to the door, as was shown by the deep toe and light heel marks, while wooden-leg had waited a little, and then had gone away. i thought at the time that this might be the maid and her sweetheart, of whom you had already spoken to me, and inquiry showed it was so. i passed round the garden without seeing anything more than random tracks, which i took to be the police; but when i got into the stable lane a very long and complex story was written in the snow in front of me.