d to consult them, even he was forced to go to the
Woolwich office for the purpose. And yet here we find them in the
pocket of a dead junior clerk in the heart of London. From an official
point of view it's simply awful."

"But you have recovered them?"

"No, Sherlock, no! That's the pinch. We have not. Ten papers were
taken from Woolwich. There were seven in the pocket of Cadogan West.
The three most essential are gone--stolen, vanished. You must drop
everything, Sherlock. Never mind your usual petty puzzles of the
police-court. It's a vital international problem that you have to
solve. Why did Cadogan West take the papers, where are the missing
ones, how did he die, how came his body where it was found, how can the
evil be set right? Find an answer to all these questions, and you will
have done good service for your country."

"Why do you not solve it yourself, Mycroft? You can see as far as I."

"Possibly, Sherlock. But it is a question of getting details. Give me
your details, and from an armchair I will return you an excellent
expert opinion. But to run here and run there, to cross-question
railway guards, and lie on my face with a lens to my eye--it is not my
metier. No, you are the one man who can clear the matter up. If you
have a fancy to see your name in the next honours list--"

My friend smiled and shook his head.

"I play the game for the game's own sake," said he. "But the problem
certainly presents some points of interest, and I shall be very pleased
to look into it. Some more facts, please."

"I have jotted down the more essential ones upon this sheet of paper,
together with a few addresses which you will find of service. The
actual official guardian of the papers is the famous government expert,
Sir James Walter, whose decorations and sub-titles fill two lines of a
book of reference. He has grown gray in the service, is a gentleman, a
favoured guest in the most exalted houses, and, above all, a man whose
patriotism is beyond suspicion. He is one of two who have a key of the
safe. I may add that the papers were undoubtedly in the office during
working hours on Monday, and that Sir James left for London about three
o'clock taking his key with him. He was at the house of Admiral
Sinclair at Barclay Square during the whole of the evening when this
incident occurred."

"Has the fact been verified?"

"Yes; his brother, Colonel Valentine Walter, has testified to his
departure