"Many a time when the master has rolled up his sleeves I have noticed that very mark.

I've often wondered what it could be." "Then it has nothing to do with the crime, anyhow," said the sergeant.
"But it's a rum thing all the same.

Everything about this case is rum.
Well, what is it now ?" The butler had given an exclamation of astonishment and was pointing at the dead man's outstretched hand.
"They've taken his wedding ring!" he gasped.
"What!" "Yes, indeed.

Master always wore his plain gold wedding ring on the little finger of his left hand.

That ring with the rough nugget on it was above it, and the twisted snake ring on the third finger.