`There were no lights on, and what with the mist, the darkness of the hall, and the sudden run she made, he could just be sure it was a woman. Of course, he wasn't sure that anything was wrong. But as a matter of caution, he went close and looked at the door, and then he was sure.

`The lock of the door had been splintered out from, the jamb with some sharp instrument like a chisel or a heavy screwdriver. Somers ran down the way she had gone. The glass door opened on a large paved court, with a driveway going out to the street. Of course, the woman was gone. And Somers came back.'

`Now, at the time he didn't know Driscoll lived there he only knew the Larkin woman did, from what instructions he'd been given. But he struck a match and saw the card on the door, and then he was inside in a hurry.

`The place was in a wild state of disorder; somebody had been searching for something.. Somers went out after the porters and had the devil's own time finding him. The porter is an old man, rather deaf, and he was in a bad state when Somers made him understand what had happened. The only person he had seen there that afternoon was a young man who had been there many times before, and had a key. He knew he hadn't burgled the place, because he had met the young man coming out of the door of the flat, and walked out to his car with him, and he knew everything had been in order then. Somers explained he meant a woman, who had, been there just a moment ago; and the porter refused to believe him.'

`Had anything been stolen from the flat?' Dr Fell inquired.

`We can't tell yet. I haven't seen the place, but one of my best men is up there now. According to Somers' report, the desk had been broken open, every drawer in the flat ransacked, and most of Driscoll's papers scattered over the floor.'

In search for some sort of letter or document?'

`Apparently. And I think we have an explanation of `Mary" '

`I rather thought we should,' said the doctor.

`One thing in the study struck Somers' eye because it seemed so out of place. It was your typical bachelor digs: hunting-prints, leather chairs, a silver cup or two, sport groups, things' like that. But on the mantelpiece were two plaster figures on bases, painted in bright colours — a man and a woman. They wore what Somers called "old-time clothes; like the ones in Madame Tussaud's," and they were labelled… '