Adventure, Drama, Science Fiction | 04 November 1967

Patrick Troughton, Frazer Hines, Deborah Watling

Mysterious forces are at work in 1930s Tibet. The once gentle Yeti have turned savage and besieged a Buddhist monastery. The Second Doctor, Jamie and Victoria arrive expecting a friendly welcome from the abbot, but soon become ensnared in the plans of the extradimensional being known as the Great Intelligence.