James Moran (Author) is a British screenwriter for television and film, who wrote the horror-comedy Severance . He works in the horror, comedy, science-fiction, historical fiction and spy thriller genres Andrew Cartmel (Author) is a British author and journalist. He was also the script editor of Doctor Who from 1987 to 1989. He has also worked as a script editor on other television series, as a magazine editor, as a comics writer, as a film studies lecturer, and as a novelist. David Llewellyn (Author) was born in Pontypool in 1978. He is the author of three previous novels, 'Eleven', 'Torchwood- Trace Memory', and 'Everything Is Sinister'. He lives in Cardiff. Sarah Pinborough (Author) is the author of five horror novels, two of which have been short-listed for the British Fantasy Society Award for Best Novel in 2007 and 2008.

Sarah currently lives and works in Milton Keynes. You can find out more about Sarah at www.sarahpinborough.com. Joseph Lidster (Author) is an author, script writer and actor who has written over 15 dramas for the Doctor Who, Sapphire and Steel and The Tomorrow People ranges, as well as the Torchwood audiobooks In the Shadows and Red Skies. His TV credits include the Torchwood episode 'A Day in the Death' and three episodes of The Sarah Jane Adventures. He has also written numerous short stories, including the title story in the Torchwood- Consequences collection and 'Cybermen- Status Update' (an exclusive adventure included in the BBC's interactive ebook Doctor Who- Cybermen Monster File).