ot even bow to Don Luis; and the magistrates who accompanied him
might have thought that Don Luis was merely an assistant of Sergeant
Mazeroux, if the chief detective had not made it his business to tell
them, in a few words, the part played by the stranger.

M. Desmalions briefly examined the two corpses and received a rapid
explanation from Mazeroux. Then, returning to the hall, he went up to a
drawing-room on the first floor, where Mme. Fauville, who had been
informed of his visit, joined him almost at once.

Perenna, who had not stirred from the passage, slipped into the hall
himself. The servants of the house, who by this time had heard of the
murder, were crossing it in every direction. He went down the few stairs
leading to a ground-floor landing, on which the front door opened.

There were two men there, of whom one said:

"You can't pass."

"But--"

"You can't pass: those are our orders."

"Your orders? Who gave them?"

"The Prefect himself."

"No luck," said Perenna, laughing. "I have been up all night and I am
starving. Is there no way of getting something to eat?"

The two policemen exchanged glances and one of them beckoned to Silvestre
and spoke to him. Silvestre went toward the dining-room, and returned
with a horseshoe roll.

"Good," thought Don Luis, after thanking him. "This settles it. I'm
nabbed. That's what I wanted to know. But M. Desmalions is deficient in
logic. For, if it's Arsene Lupin whom he means to detain here, all these
worthy plain-clothesmen are hardly enough; and, if it's Don Luis Perenna,
they are superfluous, because the flight of Master Perenna would deprive
Master Perenna of every chance of seeing the colour of my poor Cosmo's
shekels. Having said which, I will take a chair."

He resumed his seat in the passage and awaited events.

Through the open door of the study he saw the magistrates pursuing
their investigations. The divisional surgeon made a first examination
of the two bodies and at once recognized the same symptoms of poisoning
which he himself had perceived, the evening before, on the corpse of
Inspector Verot.

Next, the detectives took up the bodies and carried them to the adjoining
bedrooms which the father and son formerly occupied on the second floor
of the house.

The Prefect of Police then came downstairs; and Don Luis heard him say to
the magistrates:

"Poor woman! She refused to understand.... When at last she understood,
she fell to the groun