John Lucarotti (20 May 1926-20 November 1994) wrote the screenplays for the Doctor Who stories Marco Polo, The Aztecs, and The Massacre of St Bartholomew's Eve. He later wrote the novelisations of all three stories: Marco Polo, The Aztecs, and The Massacre.
Lucarotti also wrote the original script for the Doctor Who story The Ark in Space but was unable to do a rewrite because he was living on a boat in Corsica at the time. Robert Holmes did extensive rewrites and was credited with the story.
Late in his life, he also contributed the inaugural Brief Encounter short story to Doctor Who Magazine, by virtue of which he wrote himself into the Doctor Who universe. It was officially untitled, but came to have the name The Meeting.