The TARDIS lands at Caliburn House and deals with a ghost known as the Witch of the Well.
The Doctor and Clara work with Professor Alec Palmer and Emma Grayling looking for the ghost.
Their relationships seem similar to that of Clara and The Doctor.
Clara has a strong reaction to witnessing "Always" in the TARDIS.
The Doctor realizes the ghost is actually someone stuck in a parallel dimension.
They rescue the woman in the other dimension, but encounter a creature who has been searching for it's love across time.
The Doctor admits he went to see Emma Grayling to ask her questions about Clara.
The Doctor reunites the lost lovers.