David Stuart Davies is the editor of Sherlock Magazine and an expert on Sherlock Holmes, having written five novels, film books, and plays featuring the character. He also edits the Crime Writers' Association's monthly Red Herrings magazine, and is the author of the Johnny Hawke novels Forests of the Night and Without Conscience. Mark Gatiss is the cocreator of Sherlock and one of The League of Gentlemen. He has written episodes of Doctor Who and is the author of The Vesuvius Club.