"She knows a good deal about this affair," he murmured.

"Who is she shielding?
I suspect her brother.

Otherwise she would not have hidden the knife.

I wonder to whom it belongs.

Here are three notches cut in the handle--there is a stain on the blade--blood, I suppose." He got no further in his soliloquy, for Mrs.Octagon swept into the room in her most impressive manner.