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"Not a bit, Doctor. Stay where you are. I am lost without my

Boswell. And this promises to be interesting. It would be a pity

to miss it."

"But your client-"

"Never mind him. I may want your help, and so may he. Here he

comes. Sit down in that armchair, Doctor, and give us your best

attention."

A slow and heavy step, which had been heard upon the stairs and

in the passage, paused immediately outside the door. Then there

was a loud and authoritative tap.

"Come in!" said Holmes.