According to Deadline, the screen version will be adaptated by Life on Mars’ Ashley Pharaoh, with Harkness herself set to pen some instalments. The book follows Diana Bishop, a young scholar at Oxford who is a descendant of the Salem witches. When she accidentally unlocks an enchanted manuscript, she is compelled to embrace the magic in her blood and enters a forbidden romance with charming 1,500-year-old vampire Matthew Clairmont.
Bad Wolf only have TV rights to the series; Warner Bros. acquired the film rights not long after publication of the book in February 2011. The company is currently working on a small screen version of Philip Pullman’s His Dark Materials sequence.