The Virgin Decalog books were collections of short stories published by Virgin Publishing based on the television series Doctor Who: they gained their name from the fact that each volume contained ten stories (although the last collection contains eleven). Five volumes were published between 1994 and September 1997, although volumes 4 and 5 did not feature the Doctor or any other non-Virgin copyrighted characters. This is because the BBC decided not to renew Virgin's licence to produce original fiction featuring the Doctor or any characters featured in the TV series (Virgin transitioned to featuring characters created for literature over which the BBC had no rights). Following this, the BBC began producing their own Doctor Who fiction, including short stories under the name Short Trips.
The first volume of stories published was Decalog (Virgin, 17 March 1994), edited by Mark Stammers and Stephen James Walker. It contained the following stories:
The Story Playback by Stephen James Walker was a short linking piece that recurred between the other stories, detailing the story of an amnesiac claiming to be the Doctor having his memories restored by going through the items in his pockets: each item relates to one of the stories.
The next volume was Decalog 2: Lost Property (Virgin Publishing, 20 July 1995), again edited by Mark Stammers and Stephen James Walker. This volume abandoned the linking story concept used in Decalog, and instead concentrated on having all its stories written on the same theme – a property that the Doctor owns somewhere or when in the universe. It contained the stories:
The final Decalog collection before Virgin lost their licence to use The Doctor and characters from the 1963-89 series was called Decalog 3: Consequences (Virgin Publishing, 18 July 1996), and was joint edited by Justin Richards and Andy Lane. It introduced a new idea for linking the stories whereby each story would contain an element from the previous and subsequent stories, and the first contained an element from the last and vice versa. It contained the following stories: