intended solely to account for the deferred bringing of the tray.

It was apparently an unimportant missive which could well have been
postponed till the morning, being merely an announcement to a firm of
publishers that he would pay a business call later in the week. In
less than five minutes it, and another, making an appointment for
Wednesday, this being the night of Monday, were written, sealed,
directed and stamped.

He rang. Bates came, with laden hands, thinking the tray was in
demand.

"Kindly post those for me," said Theydon, glancing at the letters.
"Better take an umbrella. It's raining cats and dogs."

The man had found the door open, and left it so when he entered.
Before he could answer, the door of No. 17 was opened and closed, with
the jingle inseparable from the presence of many small panes of glass
in leaden casing, and footsteps sounded on the stairs. For some
reason-- probably because of the unusual fact that any one should be
leaving Mrs. Lester's flat at so late an hour, both men listened.

Then Bates recollected himself.

"Yes, sir," he said.

Oddly enough, the man's marked pause suggested a question to his
employer.

"Mrs. Lester's visitor didn't stop long," was the comment. "He came up