"Because I heard from her only last Saturday, and she not only said nothing about coming to Oxfordshire, but asked me to arrange to spend a fortnight in London before we both went to Cornwall for the Summer."

"Ah! That is rather important, I should imagine," said Theydon thoughtfully.

"It is odd, too, that you and the detectives should have noticed the smell of a joss stick in the flat," went on Miss Beale. "Edith—my niece, you know—could not bear the smell of joss sticks. They reminded her of Shanghai, where she lost her husband."

Theydon looked more startled than such a seemingly simple statement warranted. He had realized already that the ivory skull was the work of an Oriental artist, and the mention of Shanghai brought that sinister symbol very vividly to his mind's eye.

"Mrs. Lester had lived in China, then?" he said.

"Yes. She was out there nearly six years. Her husband died suddenly last October—he was poisoned, she firmly believed—and, of course, she came home at once."

"What was Mr. Lester's business, or profession?"

"He was a barrister. I do not mean that he practised in the Consular courts. He was making his way in England, but was offered some sort of appointment in Shanghai. The post was so lucrative that he relinquished a growing connection at the bar. I have never really understood what he did. I fancy he had to report on commercial matters to some firm of bankers in London, but he supplied very little positive information before Edith and he sailed. Indeed, I took it that his mission was highly confidential, and about that time there was a lot in the newspapers about rival negotiators for a big Chinese loan, so I formed the opinion that he was sent out in connection with something of the sort. Neither he nor Edith meant to remain long in the Far East. At first their letters always spoke of an early return. Then, when the years dragged on, and I asked for definite news of their homecoming, Edith said that Arthur could not get away until the country's political affairs were in a more settled state. Finally came a cablegram from Edith: 'Arthur dead; sailing immediately,' and my niece was with me within a few weeks. The supposed cause of her husband's death was some virulent type of fever, but, as I said, Edith was convinced that he had been poisoned."

"Why?"

"That I never understood. She never willingly talked about Shanghai, or her life there. Indeed, she was always most anxious that no one should know she had ever lived in China. Yet she had plenty of friends out there. I gathered that Arthur had left her well provided for financially, and they were a most devoted couple. Edith was the only relative I possessed. It is very dreadful, Mr. Theydon, that she should be taken from me in such a way."