I must tell you that the victim received the fatal blow from the sharpened end of a broken foil.

This piece of stuff, on which the assassin wiped his weapon, is a proof of what I state." "I beseech you, sir, to order a most minute search to be made.

It is impossible that the other half of the foil is not to be found." "Orders shall be given to that effect.

Look, here is the exact imprint of the murderer's foot traced on this sheet of paper.

I will place one of your boots upon it and the sole, as you perceive, fits the tracing with the utmost precision.