”‘Be extremely cautious if you really mean to go to England. It is impossible for me to accompany you, or I would; but you know my presence in Italy is imperative. You will easily find Bonciani’s Café, in Regent Street. Remember, at the last table on the left every Monday at five.

”‘With every good wish for a pleasant journey,

”‘Egisto.’

“The letter, which has no envelope,” added the Coroner, “is dated from Lucca, a town in Tuscany, a week ago. It may possibly assist the police in tracing friends of the deceased.” Then, turning to the constable, he asked, “Well, what else was in the lady’s bag?”

“This photograph,” answered the officer, holding up a cabinet photograph.

“Why!” cried the cab-driver, who had taken a seat close to where the policeman was standing. “Why, that’s a photograph of the Major!”

“Yes,” added the barmaid excitedly, “that’s the same man who came up to the gentleman while he was speaking to me. Without doubt that’s the Major, and an excellent portrait, too.”

“Strange that this, of all things, should be in the dead woman’s possession, when we have it in evidence that she was introduced to him only half an hour before her death,” observed the Coroner. “Very strange indeed. Every moment the mystery surrounding this unknown woman seems to grow more impenetrable.”