The Four Corners of the World by A.E.W. Mason

I

Mr. Twiss was a great walker, and it was his habit, after his day's work was done, to walk from his pleasant office in the Adelphi to his home at Hampstead. On an afternoon he was detained to a later hour than usual by one of his clients, a Captain Brayton, over some matter of a mortgage. Mr. Twiss looked at his office clock.