into the suction-cleaning business--more money in it than in
being a detective, I'll bet."

The cleaner was run over and under the mattress and along every
crack and cranny of the brass bed. This done and this dust also
carefully stowed away, we departed, very much to the
mystification of Marie and, I could not help feeling, of other
eyes that peered in through keyholes or cracks in doors.

"At any rate," said Kennedy exultingly, "I think we have stolen a
march on them. I don't believe they were prepared for this, not
at least at this stage in the game. Don't ask me any questions,
Walter. Then you will have no secrets to keep if anyone should
try to pry them loose. Only remember that this man Lawrence is a
shrewd character."

The next day Marie came, looking even more careworn than before.

"What's the matter, mademoiselle?" asked Craig. "Didn't you pass
a better night?"

"Oh, mon Dieu, I rest well, yes. But this morning, while I am at
breakfast, Mr. Close send for me. He say that I am discharged.
Some servant tell of your visit and he verry angr-ry. And now what
is to become of me--will madame his wife give a recommendation now?"

"Walter, we have been discovered," exclaimed Craig with
considerable vexation. Then he remembered the poor girl who had
been an involuntary sacrifice to our investigation. Turning to
her he said: "Marie, I know several very good families, and I am