eper, whose manner betrayed a discreet consciousness of
something in the air. It was unnecessary to speculate why. In the
distance, muffled by the armoured passages, an authoritative voice
boomed like a sonorous bell heard under water.

"What, however, are the facts?" it was demanding, with the causticity
of baffled helplessness. "I am assured that there is no other key in
existence; yet my safe has been unlocked. I am given to understand
that without the password it would be impossible for an unauthorized
person to tamper with my property. My password, deliberately chosen,
is 'anthropophaginian,' sir. Is it one that is familiarly on the lips
of the criminal classes? But my safe is empty! What is the
explanation? Who are the guilty persons? What is being done? Where are
the police?"

"If you consider that the proper course to adopt is to stand on the
doorstep and beckon in the first constable who happens to pass, permit
me to say, sir, that I differ from you," retorted the distracted
manager. "You may rely on everything possible being done to clear up
the mystery. As I told you, I have already telephoned for a capable
private detective and for one of my directors."

"But that is not enough," insisted the professor angrily. "Will one
mere private detective restore my L6000 Japanese 4-1/2 per cent.
bearer bonds? Is the return of my irreplaceable notes on 'Polyphyletic
Bridal Customs among the mid-Pleistocene Cave Men' to depend on a
solitary director? I demand that the police shall be called in--as
many as are available. Let Scotland Yard be set in motion. A searching
inquiry must be made. I have only been a user of your precious
establishment for six months, and this is the result."

"There you hold the key of the mystery, Professor Bulge," interposed
Carrados quietly.

"Who is this, sir?" demanded the exasperated professor at large.

"Permit me," explained Mr. Carlyle, with bland assurance. "I am Louis
Carlyle, of Bampton Street. This gentleman is Mr. Max Carrados, the
eminent amateur specialist in crime."

"I shall be thankful for any assistance towards elucidating this
appalling business," condescended the professor sonorously. "Let me
put you in possession of the facts--"

"Perhaps if we went into your room," suggested Carrados to the
manager, "we should be less liable to interruption."

"Quite so; quite so," boomed the professor, accepting the proposal on
everyone else's behalf. "The facts, sir, are these