I was placing the smaller articles in the safe, and congratulating myself on an easy bargain, when the door opened. Turning, I saw two quietly dressed men, of severe countenance. One advanced, pulling hard at a note-book that fitted too exactly the inside pocket of his overcoat.
"Got my pencil, sergeant?" he asked of his companion.
"You had it last, inspector," replied the other.
"I distinctly remember lending it you," said the first with warmth, "as we were coming out of the Police station. You said you wanted to make a note of something concerning the robbery, and I handed you my pencil case, and you never gave it back. 'Tisn't the first time that has happened. If it occurs again I shall report the matter to the superintendent." I asked what they wanted with me. "Your name is Miss Weston," he said.
"That's right."
"We are two plain clothes detectives," he went on, "and we have a rather painful duty to perform."
"I suppose your tasks are never very pleasant."
"True for you, ma'am. Sergeant, close the door, and tell our men outside to be prepared in case any attempt is made to escape. Now then!" Addressing himself to me. "You have just purchased a quantity of silver. Tell me what you gave for it."
I mentioned the sum.