One of the world’s first detective stories, Edgar Allen Poe’s The Purloined Letter, was written in the year 1844. It is set in the City of Paris. In the story the bad guy — Minister D — has in his possession a letter containing compromising information about an unnamed lady. He is using this information to blackmail her. There is only one copy of the letter (reminder: there were no copying machines and scanners in those days).
This story illustrates the importance of having experienced people available to solve problems.