To celebrate the arrival of Peter Capaldi on to our screens as the newly regenerated Doctor, this collection of Doctor Who short stories, each written by a different author, now includes an extra, brand-new twelfth adventure as part of the 12 Doctors, 12 Stories paperback anthology. Offering the perfect addition to the top-selling series, the twelfth story, "Lights Out," has been penned by self-professed Doctor Who fan and best-selling female sci-fi writer Holly Black.