Have you turned the case over in your mind ?" "Yes, I have thought a good deal of it in the course of the day." "What do you make of it ?" "It is very bewildering." "It has certainly a character of its own.

There are points of distinction about it.

That change in the footprints, for example.

What do you make of that ?" "Mortimer said that the man had walked on tiptoe down that portion of the alley." "He only repeated what some fool had said at the inquest.

Why should a man walk on tiptoe down the alley ?" "What then ?" "He was running, Watson--running desperately, running for his life, running until he burst his heart--and fell dead upon his face." "Running from what ?" "There lies our problem.