"'To some extent,' says Mrs. Quinlan. 'But it is all kept in the safe there.'
"'Would you have any objection to our looking through it,' says the detective, 'and seeing that nothing is missing?'
"'No objection whatever,' says Mrs. Quinlan.
"Whereupon the safe is unlocked, and the treasures laid forth. With one exception it is all correct. Nothing is missing but the wonderful diamond bracelet. That is gone.
"'It accounts,' remarked the detective, 'for the disappearance of Alice Frost.'
"Mrs. Quinlan fell back speechless, and, when she recovered, bade the detective track Alice Frost and the sixty-thousand-pound bracelet.
"What has been discovered is this: Alice Frost disappeared one Friday night. Presumably the diamond bracelet also disappeared at the same time.
"What occurred in or about the Langham Hotel on that night which may afford a clue to the discovery of the robber or robbers?
"On that night the policeman on duty observed a man walking on the opposite side of the road for a space of a couple of hours. This man did nothing but walk slowly up and down, keeping as much as possible in the dark, and looking for some person he was waiting for. The policeman on duty passed him on three occasions, and although the man endeavoured to avoid him, he obtained a good view of his features. He will be able to recognize the man.
"At half past eleven a woman came out of the Langham, and went over to the man. The policeman on duty saw this movement, but is not sure that he will be able to identify the woman. Of the man he is sure.