Mr Standfast by John Buchan

The journalist from Kansas City was a man of action. He wasted no words in introducing himself or unfolding his plan of campaign. 'You've got to follow me, mister, and not deviate one inch from my tracks. The explaining part will come later. There's big business in this shack tonight.' He unlocked the little door with scarcely a sound, slid the crust of snow from his boots, and preceded me into a passage as black as a cellar. The door swung smoothly behind us, and after the sharp out-of-doors the air smelt stuffy as the inside of a safe.

A hand reached back to make sure that I followed. We appeared to be in a flagged passage under the main level of the house. My hobnailed boots slipped on the floor, and I steadied myself on the wall, which seemed to be of undressed stone. Mr Donne moved softly and assuredly, for he was better shod for the job than me, and his guiding hand came back constantly to make sure of my whereabouts.