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.

Cast:Patrick Troughton, Frazer Hines, Deborah Watling, Jack Watling, Wolfe Morris, Charles Morgan,

Genre:Drama, Adventure, Science Fiction,

country:United Kingdom,

Production:BBC,