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.
Henry Lincoln | Writer |
Mervyn Haisman | Writer |
Gerald Blake | Director |
Innes Lloyd | Producer |
Peter Bryant | Script Editor |