Searching for the third segment to the Key to Time brings the Doctor and Romana to present-day Earth, where the travellers have to contend with stone circles, Druidic rituals and a not-so-mythical goddess known as the Cailleach.

Cast:Tom Baker, Mary Tamm, John Leeson, Beatrix Lehmann, Susan Engel, Nicholas McArdle,

Genre:Action, Adventure, Drama, Science Fiction, TV Movie,

country:United Kingdom,

Production:BBC,