The Doctor and Clara arrive at an old manor house in 1974 where Alec
Palmer and Emma Grayling are investigating the existence of a ghost.
Alec is a former army Major and now a psychologist while Emma is an
empathic psychic who can not only sense the presence of paranormal
beings but can sense their feelings as well. Palmer explains that the
house has been haunted for hundreds of years and the ghost, a woman, is
likely much older. Emma senses that the ghost is very lonely but the
Doctor realizes that she is not a ghost at all but a creature trapped in
a zone where time...
The Doctor looks and seems human. He's handsome, witty, and could be mistaken for just another man in the street. But he is a Time Lord: a 900 year old alien with 2 hearts, part of a gifted civilization who mastered time travel. The Doctor saves planets for a living – more of a hobby actually, and he's very, very good at it. He's saved us from alien menaces and evil from before time began – but just who is he?