"I did," was his response, "thinking it would be your wish that I should do no more business to-day."
"Why should you think that?"
"Because of what was passing through Mr. Dowsett's mind."
"I ask you to pardon me for my display of passion. What was Mr. Dowsett thinking of?"
"Of two very simple matters," said Devlin; "the time of day and an address. The time was fifteen minutes past three, the address, 28 Athelstan Road."
"Nothing more?" I inquired, much puzzled.
"Nothing more."
I pondered a moment; I could draw no immediate conclusion from material so bare. I asked Devlin what he could make of it; he replied, politely, that it was for me, not for him, to make what I could of it. A suggestion presented itself.
"At fifteen minutes past three," I said, "Mr. Dowsett has an appointment with some person at 28 Athelstan Road."
"Possibly," said Devlin.