G.K. Chesterton was an English writer, philosopher, and theologian who lived and wrote at the turn of the 20th century. He was a prolific writer, producing fiction and nonfiction along with essays, poetry, and plays. Chesterton is best known for his creation of the priest-detective character Father Brown and for his book Orthodoxy which has become a classic of Christian apologetics.

David Stuart Davies is an author, playwright, and editor. He has written nine Sherlock Holmes novels and Starring Sherlock Holmes, which details the film career of the famous sleuth. He has also created several detective series set variously in London during World War II, New York in the 1930s, and in 1980s Yorkshire. His non-fiction work includes Bending the Willow: Jeremy Brett as Sherlock Holmes, which is regarded as the definitive work on the subject. Currently, he is the general contributing editor for Wordsworth Editions Mystery & Supernatural series. He is a Baker Street Irregular, and a member of the Crime Writers' Association (he edited their monthly magazine Red Herrings for twenty years) and The Detection Club. He has given talks and dramatic presentations on crime fiction and his collections of ghost stories at various literary festivals, libraries, and conferences as well as on the Queen Mary II.