Doctor Who season 14 marked a huge turning point for the classic sci-fi television show, bringing back showrunner Russell T. Davies for a completely new era of adventures and mysteries. As with the arrival of any new actor playing the Doctor, this season of Doctor Who was filled with exciting backstory and character-building moments that rendered it much slower-paced than most other seasons, but there were still some gripping storylines that ran throughout. One of this seasons biggest mysteries pertained to the character of Susan, who first appeared in 1963 as the Doctors granddaughter.