convulsed with silent laughter. Parkinson had infinitely
more dignity and conceded merely a tolerant recognition of the
ludicrous.

"That was a bad shot, Parkinson," remarked his master when he could
speak. "We will try another."

For three minutes, with scrupulous conscientiousness on the part of
the reader and every appearance of keen interest on the part of the
hearer, there were set forth the particulars of a sale by auction of
superfluous timber and builders' material.

"That will do," said Carrados, when the last detail had been reached.
"We can be seen from the door of No. 107 still?"

"Yes, sir."

"No indication of anyone coming to us from there?"

"No, sir."

Carrados walked thoughtfully on again. In the Holloway Road they
rejoined the waiting motor-car.

"Lambeth Bridge Station" was the order the driver received.

From the station the car was sent on home and Parkinson was instructed
to take two first-class singles for Richmond, which could be reached
by changing at Stafford Road. The "evening rush" had not yet commenced
and they had no difficulty in finding an empty carriage when the train
came in.

Parkinson was kept busy that journey describing what he saw at various
points between Lambeth Bridge and Knight's Cross. For a quarter of a
mile Carrados's demands on the eyes and the memory of his remarkable
servant were wide and incessant. Then his questions ceased. They had
passed the "stop" signal, east of Knight's Cross Station.

The following afternoon they made the return journey as far as
Knight's Cross. This time, however, the surroundings failed to
interest Carrados. "We are going to look at some rooms," was the
information he offered on the subject, and an imperturbable "Yes, sir"
had been the extent of Parkinson's comment on the unusual proceeding.
After leaving the station they turned sharply along a road that ran
parallel with the line, a dull thoroughfare of substantial, elderly
houses that were beginning to sink into decrepitude. Here and there a
corner residence displayed the brass plate of a professional occupant,
but for the most part they were given up to the various branches of
second-rate apartment letting.

"The third house after the one with the flagstaff," said Carrados.

Parkinson rang the bell, which was answered by a young servant, who
took an early opportunity of assuring them that she was not tidy as it
was rather early in the afternoon. She informed Carrados, in repl