Doctor Who: The Abominable Snowmen (1967)

When the TARDIS materialises in the Himalayas, the Doctor (Patrick Troughton) decides to pay a return visit to the nearby Det-Sen monastery only to be accused of murder...Jamie (Frazer Hines) and Victoria (Deborah Watling) make their way to the monastery shortly before it is attacked by the Yeti...While the Doctor and Jamie return to the TARDIS for equipment, the control sphere Jamie brought to the monastery is reactivated...With the Great Intelligence on the verge of becoming corporeal, the Doctor challenges Padmasambhva (Wolfe Morris) to a mental battle in order to defeat it...