son, inasmuch as, if there is no heir of Cosmo Mornington's in existence, I come into a hundred million francs. Exactly. There is therefore nothing for me to do, Monsieur le Préfet, but to go with you to the lock-up or else"
"Or else what?"
"Or else hand over to you the criminal, the real criminal."
The Prefect of Police smiled and took out his watch.
"I'm waiting," he said.
"It will take me just an hour, Monsieur le Préfet, and no more, if you give me every latitude. And the search of the truth, it seems to me, is worth a little patience."
"I'm waiting," repeated M. Desmalions.
"Sergeant Mazeroux, please tell Silvestre, the manservant, that Monsieur le Préfet wishes to see him."
Upon a sign from M. Desmalions, Mazeroux went out.
Don Luis explained his motive.
"Monsieur le Préfet, whereas the discovery of the turquoise constitutes in your eyes an extremely serious proof against me, to me it is a revelation of the highest importance. I will tell you why. That turquoise must have fallen from my ring last evening and rolled on the carpet.
"Now there are only four persons," he continued, "who can have noticed this fall when it happened, picked up the turquoise and, in order to compromise the new adversary that I was, slipped it into the safe. The first of those four persons is one of your detectives, Sergeant Mazeroux, of whom we will not speak. The second is dead: I refer to M. Fauville. We will not speak of him.
