On the planet Telos, an archeological expedition uncovers a hidden entrance in the side of a mountain. When a member of the expedition touches the doors, he is electrocuted. The TARDIS lands nearby, and the expedition is joined by the Doctor, Jamie and Victoria. Parry, the expeditions leader, explains that they are here to find the remains of the Cybermen, who apparently died out centuries before. The expedition is funded by Kaftan, who is accompanied by her giant manservant Toberman and her colleague Klieg. Hmm says the Doctor...
What do you do when you're the Doctor and you see your TARDIS being hauled away on a truck. Why, you give chase, but when you can't chase down the truck you return to the vicinity and do your best Sherlock Holmes impression. In this story we have the Doctor and Jamie still in Gatwick Airport, the TARDIS has been stolen, and for a couple episodes the Doctor is playing Sherlock Holmes looking at minute clues that lead him on a trail which ends in his capture. Seems someone has set a snare for the Doctor, and they wish him to go back in time to 1866 and to do a little experiment.
Back to Tibet we go except it was probably really the Scottish Highlands in disguise. We have here a most interesting adventure about myth. The Doctor, Jamie and Victoria land in Tibet and its too cold even for Jamie's bravery and he ends up wearing a jacket despite his Highlander blood. The wimp. The adventure involves an anthropologist / explorer hunting the elusive Yeti, a monastery full of Tibetan Monks, and space aliens bent on destruction. Oh, and the Doctor gets to return a holy relic, a Ghanta, to this monastery which he had visited 300+ years before.
What happens when a police box materializes on the runway of Gatwick Airport? Why the police come over and retrieve it. The Doctor and Companions arrive in 'modern' Gatwick Airport, leading Jamie to believe they're being attacked by flying beasties. As they're running around Polly discovers a murder. As the story progresses it gets weirder and weirder. The murder was conducted using a weapon which electrocuted the victim, leaving burn marks and scorched fabric, and why was an unused Spanish postage stamp in his pocket? Curiouser and curiouser my dear Commandant.