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LADY MOLLY OF SCOTLAND YARD Miss Violet going into her aunt's room, the clock at St. Peter's, Eaton Square, was just striking twelve.

I dare say you think I ought by now to have mentioned the charwoman, Mrs. Thomas, who represented the final, most complete, most hopeless contradiction in this remarkable case.

Mrs. Thomas was seen by Mary, the housemaid, at half-past six o'clock in the morning, coming down from the upper floors, where she had no business to be, and carrying the bag of sand used for strewing over the slippery front-door steps.

The bag of sand, of course, was always kept in the area.

The moment that bag of sand was mentioned Dr. Folwell gave a curious gasp. Here, at least, was the solution to one mystery. The victim had been stunned whilst still in bed by a blow on the head dealt with that bag of sand; and whilst she was unconscious the callous miscreant had robbed her and finally asphyxiated her with the gas fumes.

Where was the woman who, at half-past six in the morning, was seen in possession of the silent instrument of death?

Mrs. Thomas had disappeared. The last that was then or ever has been seen of her was when she passed underneath the dim light of a by-pass on the landing, as if tired out with the weight which she was carrying.

Since then, as you know, the police have been 216