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 dog-cart. 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."

"I have only the evidence of the dancing men," said Holmes. "I will explain the matter to you later. Meanwhile, since it is too late to prevent this tragedy, I am very anxious that I should use the knowledge which I possess in order to insure that justice be done. Will you associate me in your investigation, or will you prefer that I should act independently?"

"I should be proud to feel that we were acting together, Mr. Holmes," said the inspector, earnestly.

"In that case I should be glad to hear the evidence and to examine the premises without an instant of unnecessary delay."

Inspector Martin had the good sense to allow my friend to do things in his own fashion, and contented himself with carefully noting the results. The local surgeon, an old, white-haired man, had just come down from Mrs. Hilton Cubitt's room, and he reported that her injuries were serious, but not necessarily fatal. The bullet had passed through the front