“I got down from my gallows-scaffold, Your Majesty, to experiment on that time-limit.  Oh, nothing and nobody could have prevented my making that experiment before I died, to prove to myself that Rouletabille had all along been right.  I had studied the grounds around the datcha enough to be perfectly exact about the distances.  I found in the court where I was to be hanged the same number of steps that there were from the kiosk to the steps of the veranda, and, as the staircase of the revolutionaries had fewer steps, I lengthened my journey a few steps by walking around a chair.  Finally, I attended to the opening and closing of the doors that Matrena would have had to do.  I had looked at a watch when I started.  When I returned, Sire, and looked at the watch again, I had taken three minutes to cover the distance — and it is not for me to boast, but I am a little livelier than the excellent Matrena.

“Matrena had lied.  Matrena had simulated the poisoning of the general.  Matrena had coolly poured ipecac in the general’s glass while we were illustrating with matches a curious-enough theory of the nature of the constitution of the empire.”

“But this is abominable!” cried the Emperor, this time definitely convinced by the intricate argument of Rouletabille.  “And what end could this imitation serve?’”

“The end of preventing the real crime!  The end that she believed herself to have attained, Sire, to have Natacha removed forever - Natacha whom she believed capable of any crime.”

“Oh, it is monstrous!  Feodor Feodorovitch has often told me that Matrena loved Natacha sincerely.”

“She loved her sincerely up to the day that she believed her guilty.  Matrena Petrovna was sure of Natacha’s complicity in Michael Nikolaievitch’s attempt to poison the general.  I shared her stupor, her despair, when Feodor Feodorovitch took his daughter in his arms after that tragic night, and embraced her.  He seemed to absolve her.  It was then that Matrena resolved within herself to save the general in spite of himself, but I remain persuaded that, if she had dared such a plan against Natacha, it would only be because of what she believed definite proof of her step-daughter’s infamy.  These papers, Sire, that you have shown me, and which show, if nothing more, an understanding between Natacha and the revolutionaries, could only have been in the possession of Michael or of Natacha.  Nothing was found in Michael’s quarters.  Tell me, then, that Matrena found them in Natacha’s apartment.  Then, she did not hesitate!”

“If one outlined her crime to her, do you believe she would confess it? asked the Emperor.

“I am so sure of it that I have had her brought here.  By now Koupriane should be here at the chateau, with Matrena Petrovna.”

“You think of everything, monsieur.”

The Tsar moved to ring a bell.  Rouletabille raised his hand.

“Not yet, Sire.  I ask that you permit me not to be present at the confusion of that brave, heroic, good woman who has loved me much.  But before I go, Sire — do you promise me?”