Distributors, Raincoast Books Ltd sought a court injunction after a "small number" of Harry Potter and The Half-Blood Prince books were accidentally sold in a shop near Vancouver on July 7, a week ahead of the official release date.
The injunction prevents anyone disclosing any part of the plot and ruining the eagerly-awaited adventure for other fans.
Jamie Broadhurst, marketing director at Raincoast Books Ltd, says the innocent fans who bought the book would not be penalized.
He explains, "We look to them to ensure that the excitement and mystery of the story is preserved for fans around the world until July 16 by co-operating with us and observing the terms of the court injunction."
The company will accept returned copies until July 16 and will reward fans who sacrifice their novels with a bookplate signed by author J.K. Rowling and a limited edition T-shirt.
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