 I've identified the dead man. My dear Lestrade. Oh yes doctor. We have an inspector who makes a speciality of Saffron Hill on the Italian Quarter and he knew our corpse the minute he set eyes on him. His name was Pietro Venucci from Naples he was and he was one of the most notorious cutthroats in London. Venucci the last link. He was connected with the old secret society of the Mafia you see and it's perfectly clear that he must have broken the rules in some way so this fellow of the photograph is sent to kill him.