Nick Lake is a children's book editor at Harper UK. He received his degree in English from Oxford University. His Blood Ninja trilogy was inspired by his interest in the Far East, and by the fact that he is secretly a vampire ninja himself. Nick lives with his wife and daughter in England. Visit him on Twitter @NickLakeAuthor. Emily Gravett is the two-time winner of the Kate Greenaway Medal with Wolves and Little Mouse's Big Book of Fears. Her internationally award-winning picture books include Meerkat Mail, Tidy and Old Hat. She has illustrated bestselling fiction, including Matt Haig's Evie and the Animals and and a recent full-colour edition of Quidditch Through the Ages. @emily_gravett