See also works published as Andrew Lane During 2009, Macmillan Books announced that Lane would be writing a series of books focusing on the early life of Sherlock Holmes. The series was developed in conjunction with the estate of Sir Arthur Conan Doyle. Lane had already shown an extensive knowledge of the Holmes character and continuity in his Virgin Books novel All-Consuming Fire in which he created The Library of St. John the Beheaded as a meeting place for the worlds of Sherlock Holmes and Doctor Who. The first book in the 'Young Sherlock Holmes' series – Death Cloud – was published in the United Kingdom in June 2010 (February 2011 in the United States), with the second – Red Leech – published in the United Kingdom in November of that year (with a United States publication date under the title Rebel Fire of February 2012). The third book – Black Ice – was published in June 2011 in the UK while the fourth book – Fire Storm – was published originally in hardback in October 2011 with a paperback publication in March 2012. The fifth book, Snake Bite was published in hardback in October 2012 and the sixth book, Knife Edge was published in September 2013. Death Cloud was short-listed for both the 2010 North East Book Award. (coming second by three votes) and the 2011 Southampton's Favourite Book Award. Black Ice won the 2012 Centurion Book Award. Early in 2012, Macmillan Children's Books announced that they would be publishing a new series by Lane, beginning in 2013. The Lost World books will follow disabled 15-year-old Calum Challenger, who is co-ordinating a search from his London bedroom to find creatures considered so rare that many do not believe they exist. Calum's intention is to use the creatures' DNA to help protect the species, but also to search for a cure for his own paralysis. His team comprises a computer hacker, a free runner, an ex-marine and a pathological liar.

Jacqueline Rayner is a best selling British author, best known for her work with the licensed fiction based on the long-running British science fiction television series Doctor Who. Her first professional writing credit came when she adapted Paul Cornell's Virgin New Adventure novel Oh No It Isn't! for the audio format, the first release by Big Finish. (The novel featured the character of Bernice Summerfield and was part of a spin-off series from Doctor Who.) She went on to do five of the six Bernice Summerfield audio adaptations and further work for Big Finish before going to work for BBC Books on their Doctor Who lines. Her first novels came in 2001, with the Eighth Doctor Adventures novel EarthWorld for BBC Books and the Bernice Summerfield novel The Squire's Crystal for Big Finish. Rayner has written several other Doctor Who spin-offs and was also for a period the executive producer for the BBC on the Big Finish range of Doctor Who audio dramas. She has also contributed to the audio range as a writer. In all, her Doctor Who and related work (Bernice Summerfield stories), consists of five novels, a number of short stories and four original audio plays. Rayner has edited several anthologies of Doctor Who short stories, mainly for Big Finish, and done work for Doctor Who Magazine. Beyond Doctor Who, her work includes the children's television tie-in book Horses Like Blaze. With the start of the new television series of Doctor Who in 2005 and a shift in the BBC's Doctor Who related book output, Rayner has become, along with Justin Richards and Stephen Cole, one of the regular authors of the BBC's New Series Adventures. She has also abridged several of the books to be made into audiobooks. She was also a member of Doctor Who Magazine's original Time Team.