John le Carré, whose real name is David Cornwell, once worked as a British intelligence officer. His 1974 novel, Tinker, Tailor, Soldier, Spy, also centers on George Smiley.
Books at Amazon's New York City store are shelved with the covers facing out and organized around features that originated on the website, including "Most Wished For" and "Customers Who Bought This Item Also Bought."
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Audiobooks are the fastest growing segment of the publishing industry, while podcasts are also finding new audiences. One science fiction publisher is experimenting with a new path to the market.