Doctor Who: 10 Great Ideas That Went Absolutely Nowhere
2. The Fugitive Doctor
Jo Martin first appeared as Ruth Clayton in the episode Fugitive of the Judoon. A seemingly normal woman, Ruth's world is turned upside-down when the rhino-headed aliens invade her hometown in search of her.
She eventually discovers that she isn't Ruth Clayton at all. She's actually a version of the Doctor from some unknown point in their timeline.
It is believed that this "Fugitive" version of the character is from their very distant past, before their time as the First Doctor. However, as of right now, we still don't really know an awful lot about this incarnation of the Doctor.
The Fugitive Doctor has mainly appeared in projections and holograms since her first appearance, which has been thoroughly unhelpful when it comes to learning more about her.
Jo Martin is brilliant in the role and it would be great to see more of her, but considering that things like this don't tend to pass from showrunner to showrunner, it's unlikely that RTD will choose to explore the Fugitive Doctor further.
We also want to know where she got that coat from, because that thing is snazzy.