Doctor Who: Thirteen Doctors 13 Stories Paperback -

Malorie Blackman has written over seventy books for children and young adults, including the Noughts & Crosses series, Thief and a science-fiction thriller, Chasing the Stars. Many of her books have also been adapted for stage and television, including a BAFTA-award-winning BBC production of Pig-Heart Boy and a Pilot Theatre stage adaptation by Sabrina Mahfouz of Noughts & Crosses. There is also a major BBC production of Noughts & Crosses, with Roc Nation (Jay-Z's entertainment company) curating the soundtrack as executive music producer. In 2005 Malorie was honoured with the Eleanor Farjeon Award in recognition of her distinguished contribution to the world of children's books. In 2008 she received an OBE for her services to children's literature, and between 2013 and 2015 she was the Children's Laureate. Most recently Malorie wrote for the Doctor Who series on BBC One, and the fifth novel in her Noughts & Crosses series, Crossfire, was published by Penguin Random House Children's in summer 2019.

Neil Gaiman is the bestselling author of Coraline and Stardust, both of which are major motion films. Neil also co-wrote the script for Beowulf starring Anthony Hopkins and Angeline Jolie. He is the creator/writer of the award-winning Sandman comic series and has written several books for children.

Charlie Higson started writing when he was ten years old. After university he was a singer and painter and decorator before he started writing for television. He went on to create and star in the hugely successful comedy series The Fast Show. He is the author of the bestselling Young Bond books and the incredibly successful horror series, The Enemy.

Charlie doesn't do Facebook, but you can tweet him @monstroso.

Alex Scarrow used to be a rock guitarist, then he became a graphic artist, then he decided to be a computer games designer. Finally, he grew up and became an author. He has written a number of successful thrillers and several screenplays, but it's YA fiction that has allowed him to really have fun with the ideas and concepts he was playing around with designing games. Alex lives in Norwich.

Eoin Colfer is the megaselling author of the Artemis Fowl series, Half Moon Investigations, The Supernaturalist, Airman, The Legend of . . . books and, most recently, the WARP series. He lives with his family in Ireland. www.eoincolfer.com