"Well, I won't say it got as far as an intro," he took me up, "but weren't you at a certain house in Lennox Street when an accident occurred the other day?"

"I was, but I wasn't aware——"

"Oh, I wasn't inside the house. But I was able to be of some little assistance outside," he replied. "A very curious affair, sir," he added tentatively.

"Rather a sad one," I replied.

There was a pause. "Chelsea's very much interested in that accident," he continued.

I answered that I didn't live in Chelsea.

Then suddenly he became almost amiable; but for all his amiability his eyes were like the hard-boiled eggs on the counter, only a trifle yellower.

"Well, that's two of you gentlemen I've met now," he said. "I haven't the pleasure of knowing your name, but the other gentleman was Mr. Mackwith."

There was a certain correctness about this opening that I had reluctantly to acknowledge. He may or may not have known my name—the chances were that he had already ascertained it—but I read his thought. A few minutes ago, possibly before he had become aware of my presence, he had spoken pretty freely of Mackwith; he was now obviously asking himself whether I had overheard this. In all probability I had, but in such cases the official attitude is the best. Had Mr. Westbury been an administrator I could have imagined him penning a minute: "This does not come within the knowledge of this Department."

"Yes," he continued after a pause, "I had the pleasure of sitting on a coroner's jury with Mr. Mackwith the other day."