Born, 20th April, 1958, Simon Clark is the author of such highly regarded horror novels as Nailed By The Heart, Blood Crazy, Darker, Vampyrrhic and The Fall, while his short stories have been collected in Blood & Grit and Salt Snake & Other Bloody Cuts. He has also written prose material for the internationally famous rock band U2. Raised in a family of storytellers – family legend told of a stolen human skull buried beneath the Clark garage – he sold his first ghost story to a radio station in his teens. Before becoming a full-time writer he held a variety of day jobs, that have involved strawberry picking, supermarket shelf stacking, office work, and scripting video promos. He lives with his wife and two children in mystical territory that lies on the border of Robin Hood country in England.

There is more than one author with this name Andrew Smith wrote the Doctor Who television story Full Circle and its novelisation. At the time of initial broadcast, he was the youngest writer to contribute to the TV series. Smith submitted his work to more than one Doctor Who script editor. They replied with "positive criticism". Finally he sent The Planet that Slept, which became Full Circle. Shortly afterwards, he became a police officer, spending a long time in that career. Smith was approached by Big Finish and displayed interest in writing for them. Because he had started the trilogy with Full Circle, they asked him to write a Companion Chronicles story set in E-Space. The Invasion of E-Space was released in October 2010.