Heather Threadstone
Heather Threadstone was the daughter of Professor Threadstone and a scientist herself, like her father. Like her father, she was a friend of the Sixth Doctor, and accompanied him during the investigation of the Dominus Institute in 2016. The Doctor helped in her investigation of her missing father and discovered the Decayed Master's involvement. (AUDIO: Vampire of the Mind)
Behind the scenes[]
While she has so far only appeared once, Colin Baker refers to her as a new companion of the Sixth Doctor in the behind the scenes interviews on the Vampire of the Mind CD. Furthermore, in the behind the scenes interviews for Quicksilver, Baker says that, "if [he] could have a third companion [he'd have] Constance Clarke, Flip Jackson, and [Heather Threadstone]".
| Companions of the Sixth Doctor | ||
|---|---|---|
| Original to television | ||
| Original to prose | ||
| Original to comics | ||
| Original to audio | Evelyn Smythe • Charlotte Pollard • Mila • Jamie McCrimmon • Zoe Heriot • Thomas Brewster • Flip Jackson • Henry Gordon Jago • George Litefoot • Constance Clarke • Heather Threadstone • Hebe Harrison • Patricia McBride | |
| Original to stage plays | ||
| Original to video games | ||
| Original to webcasts | ||
| The Sixth Doctor's companions from stage plays are difficult to assert with certainty, as different actors played the Doctor in the same play. If a medium is not mentioned, then this incarnation did not have companions who were original to that medium; it does not mean that this Doctor failed to appear in that medium. |