J.K. Rowling Secretly Wrote Another Book!

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After writing seven Harry Potter books, J.R. Rowling very publicly authored her first (intended for) adult novel last year called The Casual Vacancy, and participated in a global publicity blitz aimed to mobilize her Muggle fanbase.
For her latest book, however, Rowling went the opposite route by publishing a 450-page crime novel called The Cuckoo's Calling under the pseudonym Robert Galbraith!
"I had hoped to keep this secret a little longer because being Robert Galbraith has been such a liberating experience," Rowling said when approached. "It has been wonderful to publish without hype or expectation and pure pleasure to get feedback under a different name."
Released in April, the book focuses on the death of a troubled model who falls to her death from a snow-covered Mayfair balcony. Her brother calls in Cormoran Strike, a damaged war veteran turned private detective, to investigate her death.