J.K Rowling (1965-) is one of the best-selling authors in literary history.
As the creator of the Harry Potter series of novels, Rowling has sold more than 400 million books around the world, and the cultural phenomenon has spawned a media franchise of films and theme parks worth $25 billion.
Rowling has also been praised for her philanthropic work, and has raised tens of millions for good causes including Comic Relief and her own children's charity Lumos.
Following the conclusion of the Harry Potter series in 2007, Rowling published the adult fiction novel The Casual Vacancy in 2012.
In 2013 she also published her first crime novel The Cuckoo's Calling, featuring the private detective Cormoran Strike.
The novel was written under the pseudonym 'Robert Galbraith', and was critically acclaimed as a debut novel for a new crime author – until Galbraith's true identity was uncovered by reporters.
The Silkworm, published in 2014, is the second of Rowling's three detective novels written as Galbraith.
To date, the 'Cormoran Strike' series has sold more than two million copies worldwide, and has been adapted for television, with the series set to air in 2017.
This first-edition hardback copy of the book is autographed by Rowling as "Robert Galbraith" on the title-page in black ink.
The book also includes an official J.K Rowling hologram sticker, which the author adds to signed copies of her books to authenticate them.
Complete with dust jacket, publisher's black cloth, spine lettered in gilt.
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