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 Doctor (Doctor Who) with Madame de Pompadour in "The Girl in the Fireplace", past marriages in "Blink", and the introduction of recurring character River Song in the 2008 episodes "Silence in the Library"/"Forest of the Dead", who indicates she is a lover of the Doctor. In his tenure as showrunner (2010–2017), the series continued to imply that the Doctor will have a relationship with, and perhaps marry, River Song. Additionally, Moffat has companion Amy Pond attempt to seduce the Doctor in "Flesh and Stone", although he expresses shock at the idea, protesting that she was human. In "A Christmas Carol", the Eleventh Doctor