" He stared down at the
pencilled slip which the Assistant Commissioner had handed him, but
stared vacantly, and: "Do you mind if I call someone up, sir?" he
asked. "It should be done at once."
"Call by all means, Inspector."
Dunbar again took up the telephone.
"Battersea 0996," he said, and stood waiting. Then:
"Is that Battersea 0996?" he asked. "Is Dr. Stuart there? He is
speaking? Oh, this is Inspector Dunbar. You called me up here at the
Yard a few moments ago, did you not? Correct, doctor; that's all I
wanted to know. I am coming now."
"Good," said the Assistant Commissioner, nodding his approval. "You
will have to check 'phone messages in that way until you have run your
mimic to earth, Inspector. I don't believe for a moment that it was
Sergeant Sowerby who rang you up at Dr. Stuart's."
"Neither do I," said Dunbar grimly. "But I begin to have a glimmer of
a notion who it was. I'll be saying good-night, sir. Dr. Stuart seems
to have something very important to tell me."
As a mere matter of form he waited for the report of the constable who
had gone in quest of Sowerby, but it merely confirmed the fact that
Sowerby had left Scotland Yard over three hours earlier. Dunbar
summoned a taxicab and proceeded to the house of Dr. Stuart.
CHAPTER VII
CONTENTS OF THE SEALED ENVELOPE
Stuart personally admitted Dunbar, and once more the Inspector found
himself in the armchair in the study. The fire was almost out and the
room seemed to be chilly.
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