Sherlock Holmes fan Guy Adams has written two original Sherlock Holmes novels, The Breath of God and The Army of Doctor Moreau, as well as The Case Notes of Sherlock Holmes, a fictional facsimile scrapbook published to coincide with the 150th anniversary of Conan Doyle's birth. He has also written three bestselling Life on Mars tie-in books, including The Rules of Modern Policing, as well as two Torchwood novels, The Men Who Sold the World and The House That Jack Built.