Mrs. Smith had come to London and was staying at a boarding house in Bloomsbury, a most injured woman by common consent. From the moment she had left Riversmouth I had had her watched, and nothing had happened. Why had I set a spy upon her movements? Because I had listened to Quarles in that empty room at Chelsea.
Two days after the inquest I went to see the professor. He had read the account in the papers.
"You see it was not 'Found drowned,'" I said.
"I thought it would be," he returned. "A momentary ray of light illumined those twelve good men, and they agreed that it could not be suicide."
"Of course it might have been an accident," I said, "but I don't think the evidence justified the verdict."
"A strange case, Wigan, and very difficult because it seems so easy. There are one or two curious points to begin with. Practically no one in Riversmouth knew Dr. Smith. He seldom went outside his own grounds. It is reasonable to assume, therefore, that he was a peculiar man. He bought a boat because it happened to be a bargain, his wife thinks, suggesting that spending his money in this way to no purpose was a hobby with him; yet we hear nothing of any other bargains to support the idea. Until we have evidence to the contrary, then, we may assume that some idea was in his mind when he bought the boat. He didn't forget all about its existence, remember, because twice during the summer he sent his assistant out in it, and the assistant pronounces it a very good boat and easy to manage. Now, what possessed Dr. Smith to go for a sail on that particular day and at that time of the day? He was certainly not an ardent yachtsman."
"Since he was peculiar, it is naturally difficult to account for his actions," I said.
"A possible explanation," Quarles returned.
"He may always have had the idea of suicide at the back of his brain," said Zena. "It may have been in his mind when he bought the boat. If one lives near the sea and contemplates suicide, it would be natural to choose drowning."
"There is much in that argument," said the professor.