1. Ian Don Marter was an English actor and writer, known for his role as Harry Sullivan in the BBC science-fiction television series Doctor Who from December 1974 to September 1975, with a non-regular, one-serial return in November and December 1975. He sometimes used the pseudonym Ian Don.
2. Born in Warwickshire, the son of Donald Marter and his wife Helen Donaldson, Marter graduated from the University of Oxford in 1969 and started work at the Bristol Old Vic theatre, where he served as a stage manager in addition to acting in minor stage roles.
3. In 1971, Marter auditioned for the regular role of Captain Mike Yates in the eighth season of Doctor Who. He was offered the part, but was unable to accept due to a prior commitment.
4. The production team were sufficiently impressed that they kept him in mind and cast him in a supporting role in the 1973 story Carnival of Monsters, broadcast as part of the tenth season of the programme.
5. The following year, Marter was cast in the role of Harry Sullivan, a character developed by the production team on the basis that the incoming Fourth Doctor could be portrayed by an older actor who would not be able to handle the more physical action scenes.
6. Marter remained involved with Doctor Who after his departure from the regular cast.
7. He later became involved with the writing of novelisations of Doctor Who TV serials for Target Books, penning nine such adaptations in the late 1970s and early 1980s.
8. Marter was one of a small group of Doctor Who actors to write licensed fiction based on the series.
9. Marter had been planning both a sequel to this novel and an adaptation of his unused Doctor Who Meets Scratchman script at the time of his death.
10. In addition to his Doctor Who novelisations, Marter wrote adaptations of several 1980s American films such as Splash and Down and Out in Beverly Hills for Target and its imprint, Star Books.
11. Some of these books were published under the pen name Ian Don.