“We are glad to hear it, Mr. Dunn.  Physical overthrow carries more than the immediate sufferer with it.”

If this were meant as an irritant, it did not act successfully.  The social agitator, the political demagogue, the orator whose honeyed tones had rung with biting invective in the ears of the United Brotherhood of the Awl, the Plane and the Trowel, simply bowed and calmly waited for the next attack.

Perhaps it was of a nature to surprise even him.

“We have no wish,” continued the Inspector, “to probe too closely into concerns seemingly quite removed from the main issue.  You say that you are ready, nay more, are even eager to answer all questions.  You will probably be anxious then to explain away a discrepancy between your word and your conduct, which has come to our attention.  You were known to have expressed the intention of spending the afternoon of Mrs. Spotts’ death in New York and were supposed to have done so, yet you were certainly seen in the crowd which invaded that rear building at the first alarm.  Are you conscious of possessing a double, or did you fail to cross the river as you expected to?”

“I am glad this has come up.”  The tone was one of self-congratulation which would have shaken Sweetwater sorely had he been admitted to this unofficial examination.  “I have never confided to any one the story of my doings on that unhappy afternoon, because I knew of no one who would take any interest in them.  But this is what occurred.  I did mean to go to New York and I even started on my walk to the Bridge at the hour mentioned.  But I got into a small crowd on the corner of Fulton Street, in which a poor devil who had robbed a vendor’s cart of a few oranges, was being hustled about.  There was no policeman within sight, and so I busied myself there for a minute paying for the oranges and dragging the poor wretch away into an alley, where I could have the pleasure of seeing him eat them.  When I came out of the alley the small crowd had vanished, but a big one was collecting up the street very near my home.  I always think of my books when I see anything suggesting fire, and naturally I returned, and equally naturally, when I heard what had happened, followed the crowd into the court and so up to the poor woman’s doorway.  But my curiosity satisfied, I returned at once to the street and went to New York as I had planned.”

“Do you mind telling us where you went in New York?”

“Not at all.  I went shopping.  I wanted a certain very fine wire, for an experiment I had on hand, and I found it in a little shop in Fourth Avenue.  If I remember rightly, the name over the door was Grippus.  Its oddity struck me.”

There was nothing left to the Inspector but to dismiss him.  He had answered all questions willingly, and with a countenance inexpressive of guile.  He even indulged in a parting shot on his own account, as full of frank acceptance of the situation as it was fearless in its attack.  As he halted in the doorway before turning his back upon the room, he smiled for the third time as he quietly said: