Peter Swanson's debut novel, The Girl With a Clock for a Heart (2014), was described by Dennis Lehane as 'a twisty, sexy, electric thrill ride' and was nominated for the LA Times book award.

His follow up The Kind Worth Killing (2015), a Richard and Judy pick, was shortlisted for the Ian Fleming Silver Dagger, was named the iBook stores Thriller of the Year and was a top ten paperback bestseller.

He lives with his wife and cat in Somerville, Massachusetts. 

Cara Black lives in Noe Valley with her bookseller husband, Jun, owner of Foto-Graphix Books, and her son, Tate. She's a San Francisco Library Laureate, Macavity and three time Anthony award-nominee for her series, Aimée Leduc Investigations, set in Paris.

Philip Purser-Hallard is the author of the trilogy of urban fantasy thrillers beginning with The Pendragon Protocol, and the editor of a series of anthologies about the City of the Saved. As well as writing various other books and short stories, Phil edits The Black Archive, a series of monographs about individual Doctor Who stories published by Obverse Books.

James Lovegrove is the New York Times best-selling author of The Age of Odin, the third novel in his critically-acclaimed Pantheon military SF series.

He was short-listed for the Arthur C. Clarke Award in 1998 for his novel Days and for the John W. Campbell Memorial Award in 2004 for his novel United Kingdom.

He also reviews fiction for the Financial Times. He is the author of Sherlock Holmes: Gods of War and Sherlock Holmes: The Stuff of Nightmares for Titan Books.

Andrew Lane is a popular and 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).

David Stuart Davies is one of Britain's leading Sherlockian writers. He was editor of Sherlock Holmes The Detective Magazine, authored several Holmes novels, hit play Sherlock Holmes: The Last Act, Titan's Starring Sherlock Holmes and a biography of Jeremy Brett. He is advisor to the Sherlock Holmes museum, and contributed commentaries to DVDs of the Basil Rathbone Holmes films.

Eric Brown is the BSFA award-winning author of more than 20 novels and as many novellas. Hehas had many short stories published in Interzone magazine and was, for many years, the SF and Fantasy reviewer for The Guardian