Doctor Who: 010. Winter for the Adept

Featuring Peter Davison as the Doctor and Sarah Sutton as Nyssa.

1963, Switzerland. A teenage girl plans to flee her finishing school amd elope with her mysterious beau. Unfortunately, those plans are interupted by the arrival of a young girl from Traken, seemingly lost in the snow, and what appears to be a very malevolent poltergeist with a penchant for pianos, ski-poles and the local chapel....

This story takes place between "Time-Flight" and "Arc of Infinity".