She wasn't the only one to be physically morphed by reader expectation. Miss Havisham was now elderly whether she liked it or not, and Sherlock Holmes wore a deerstalker and smoked a ridiculously large pipe. The problem wasn't just confined to the classics. Harry Potter was seriously pissed off that he'd have to spend the rest of life looking like Daniel Radcliffe.

My dear Watson," said [Sherlock Holmes], "I cannot agree with those who rank modesty among the virtues. To the logician all things should be seen exactly as they are, and to underestimate one's self is as much a departure from truth as to exaggerate one's own powers.

Certainly going back to Sherlock Holmes we have a tradition of forensic science featured in detective stories.