Roger LeDuc, known as "Gnocco" was a pickpocket operating in Florence and known to Rinaldo Pazzi. Pazzi convinced Gnocco to help him get a fingerprint of Dr Hannibal Lecter, who was posing as the Library Curator Dr Fell. Gnocco wore a silver bracelet and tried to pickpocket Lecter. Lecter grabbed his wrist but stabbed Gnocco, severing his femoral artery. He bled to death in Pazzi's arms.

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