Andrew Lane is a much-loved writer for teens and young adults. He is the author of the Young Sherlock Holmes series, which has been published in forty-four countries. He has also worked extensively in the extended universe of BBC TV's Doctor Who, and has written three adult crime novels under a pseudonym. Before becoming a writer, Andrew spent twenty-seven years working for the Ministry of Defence on the fringes of the Intelligence and Counter-terrorism communities. He has been inside several classified intelligence headquarters in the UK and US (and not as a tourist).