Ep 9. Hide

The Doctor and his companion Clara arrive at Caliburn House, a foreboding Gothic mansion, in 1974. They meet Professor Alec Palmer and his assistant Emma Grayling, who have been investigating the paranormal activity in the house. The Doctor quickly realizes that they are dealing with an alien, and he sets out to trap it. Meanwhile, Clara and Emma have a heart-to-heart about Clara's relationship with the Doctor, while Alec opens up about his own past.

As the Doctor sets his plan in motion, he and Alec are transported to a different time and place, and they must work together to survive while Clara and Emma stay behind and try to solve the mystery of the ghostly woman who has been haunting Caliburn House for centuries.

The episode is a tense thriller that keeps the audience guessing until the very end, with twists and turns that keep the Doctor, Clara, and the viewer on their toes. The chemistry between the Doctor and Clara continues to develop as they work together to uncover the truth about the ghostly woman and the mysterious creature that brought her to Caliburn House.