- Series: The Companions of Doctor Who Series Record # 5432
- Sub-series of: Doctor Who Universe
- The Companions of Doctor Who
- 1 Turlough and the Earthlink Dilemma (1985) by Tony Attwood
- 2 Harry Sullivan's War (1986) by Ian Marter
- 3 K9 and Company (1987) by Terence Dudley
- The Adventures of K9
- 1 K9 and the Time Trap (1980) [SF] by David Martin
- 2 K9 and the Beasts of Vega (1980) [SF] by David Martin
- 3 K9 and the Zeta Rescue (1980) [SF] by David Martin
- 4 K9 and the Missing Planet (1980) [SF] by David Martin