“That’s all clear enough.”
“Well, now, we can reconstruct things on those lines. Mr. Douglas enters the room. He puts down the candle. A man appears from behind the curtain. He is armed with this gun. He demands the wedding ring—Heaven only knows why, but so it must have been. Mr. Douglas gave it up. Then either in cold blood or in the course of a struggle—Douglas may have gripped the hammer that was found upon the mat—he shot Douglas in this horrible way. He dropped his gun and also it would seem this queer card—V.V. 341, whatever that may mean—and he made his escape through the window and across the moat at the very moment when Cecil Barker was discovering the crime. How’s that, Mr. Holmes?”
“Very interesting, but just a little unconvincing.”
“Man, it would be absolute nonsense if it wasn’t that anything else is even worse!” cried MacDonald. “Somebody killed the man, and whoever it was I could clearly prove to you that he should have done it some other way. What does he mean by allowing his retreat to be cut off like that? What does he mean by using a shotgun when silence was his one chance of escape? Come, Mr. Holmes, it’s up to you to give us a lead, since you say Mr. White Mason’s theory is unconvincing.”
Holmes had sat intently observant during this long discussion, missing no word that was said, with his keen eyes darting to right and to left, and his forehead wrinkled with speculation.