David Banderson
From Tardis Wiki, the free Doctor Who reference
David Banderson was the author of the short story Variations. While typing at a computer, he was put under the influence of a parasitic creature that was kept alive by stories and was in the words on the screen. The Tenth Doctor pulled Banderson away from the computer and began typing at a speed that drew all of the creature into his words. The Doctor then printed the first pages of the story, with the creature trapped in its pages, and deleted all the text from the computer file. Banderson was freed from the creature's influence, and as a result, every time Variations was read, the reader was reading their own version of events, and the story changed each time it was reread. (PROSE: Only a Matter of Time)
