As we drove up to the porticoed front door, I observed in front of it, beside the tennis lawn, the black tool-house and the pedestalled sundial with which we had such strange associations. A dapper little man, with a quick, alert manner and a waxed moustache, had just descended from a high dogcart. He introduced himself as Inspector Martin, of the Norfolk Constabulary, and he was considerably astonished when he heard the name of my companion.

“Why, Mr. Holmes, the crime was only committed at three this morning. How could you hear of it in London and get to the spot as soon as I?”

“I anticipated it. I came in the hope of preventing it.”

“Then you must have important evidence, of which we are ignorant, for they were said to be a most united couple.”