“Now, as to the weapon?”

“Well, I can make a guess at it, Captain Hastings. A pair of revolvers of my husband’s were mounted upon the wall. One of them is missing. I pointed this out to the police, and they took the other one away with them. When they have extracted the bullet, I suppose they will know for certain.”

“May I go to the gun-room?”

“Certainly. The police have finished with it. But the body has been removed.”

She accompanied me to the scene of the crime. At that moment Havering entered the hall, and with a quick apology his wife ran to him. I was left to undertake my investigations alone.