The Three Doctors (Doctor Who) the Third Doctor (Jon Pertwee) for help when Omega drains their civilisation's power. The serial opened the tenth anniversary year of the series, and features the first three Doctors all appearing in the same serial. This makes it the first "Doctor Who" story in which an earlier incarnation of the Doctor returns to the show. A superluminal signal is sent to Earth, carrying with it an energy blob that seems intent on capturing the Doctor. The homeworld of the Time Lords is also under siege, their power being drained through a black hole. Trapped themselves, and desperate to send help,
The Master (Doctor Who) celebratory fiftieth Virgin New Adventures novel, once again trying to restore his ability to regenerate, suggesting that the Tzun nanites failed to sustain him long-term. After the broadcast of the television movie, some fans suggested that this is the incarnation briefly played by Gordon Tipple in the prologue, eventually succumbing once again to the cheetah virus in the first Eighth Doctor novel "The Eight Doctors". Prior to the end of the Virgin Missing Adventures series, the Delgado version of The Master appeared in the novel "Who Killed Kennedy", depicting him setting up a complex plan to manipulate a journalist to