Five minutes later he reappeared, handed her back the keys and explained that he feared the house would not suit them. Mrs. James did not see the lady, but thought that she had gone on ahead. What she did notice was that the young man seemed very much upset about something. “He looked like a man who’d seen a ghost. I thought he was taken ill.”

On the following day another lady and gentleman came to see the property and discovered the body lying on the floor in one of the upstairs rooms. Mrs. James identified it as that of the lady who had come the day before. The house-agents also recognized it as that of “Mrs. de Castina.” The police surgeon gave it as his opinion that the woman had been dead about twenty-four hours. The Daily Budget had jumped to the conclusion that the man in the Tube had murdered the woman and afterwards committed suicide. However, as the Tube victim was dead at two o’clock, and the woman was alive and well at three o’clock, the only logical conclusion to come to was that the two occurrences had nothing to do with each other, and that the order to view the house at Marlow found in the dead man’s pocket was merely one of those coincidences which so often occur in this life.

A verdict of “Wilful Murder against some person or persons unknown” was returned, and the police (and the Daily Budget) were left to look for “the man in the brown suit.” Since Mrs. James was positive that there was no one in the house when the lady entered it, and that nobody except the young man in question entered it until the following afternoon, it seemed only logical to conclude that he was the murderer of the unfortunate Mrs. de Castina. She had been strangled with a piece of stout black cord, and had evidently been caught unawares with no time to cry out. The black silk handbag which she carried contained a well-filled notecase and some loose change, a fine lace handkerchief, unmarked, and the return half of a first-class ticket to London. Nothing much there to go upon.

Such were the details published broadcast by the Daily Budget, and “Find the Man in the Brown Suit” was their daily war-cry. On an average about five hundred people wrote daily to announce their success in the quest, and tall young men with well-tanned faces cursed the day when their tailors had persuaded them to a brown suit. The accident in the Tube, dismissed as a coincidence, faded out of the public mind.

Was it a coincidence? I was not so sure. No doubt I was prejudiced—the Tube incident was my own pet mystery—but there certainly seemed to me to be a connection of some kind between the two fatalities. In each there was a man with a tanned face—evidently an Englishman living abroad, and there were other things. It was the consideration of these other things that finally impelled me to what I considered a dashing step. I presented myself at Scotland Yard and demanded to see whoever was in charge of the Mill House case.

My request took some time to understand, as I had inadvertently selected the department for lost umbrellas, but eventually I was ushered into a small room and presented to Detective Inspector Meadows.

Inspector Meadows was a small man with a ginger head and what I considered a peculiarly irritating manner. A satellite, also in plain clothes, sat unobtrusively in a corner.

“Good morning,” I said nervously.

“Good morning. Will you take a seat? I understand you’ve something to tell me that you think may be of use to us.”

His tone seemed to indicate that such a thing was unlikely in the extreme. I felt my temper stirred.