The Tomb of the Cybermen is the first serial of the fifth season of the British science fiction television series Doctor Who, which was originally broadcast in four weekly parts on BBC1 from 2 to 23 September 1967. In the serial, the time traveller the Second Doctor (Patrick Troughton) and his travelling companions Jamie McCrimmon (Frazer Hines) and Victoria Waterfield (Deborah Watling) get caught up in an expedition to the planet Telos. The financiers of the expedition, Eric Klieg (George Pastell) and Kaftan (Shirley Cooklin), intend to revitalise the Cybermen that are buried on Telos in underground tombs, hoping they will share their power. The Tomb of the Cybermen is the earliest serial known to exist in its entirety starring Troughton as the Second Doctor. It is also the only known complete Cyberman story produced in the 1960s, and introduces the concepts of the Cyber Controller and the Cybermats, both of which would be re-used in later Cyberman stories. Plot On the planet Telos, an archeological expedition uncovers a hidden entrance in a mountainside. When one of the members tries to open the doors, he is electrocuted. The TARDIS lands nearby and the expedition is met by the Second Doctor, Jamie, and Victoria. Parry, the expedition's leader, explains that they are here to find the remains of the Cybermen, who died out five centuries before. The expedition is funded by Kaftan, who is accompanied by Toberman and her colleague Klieg. Deciding to accompany them, the Doctor helps open the doors and, while he, Parry, and Klieg stay to open the hatch leading to the tombs, the others explore the building. Victoria, Kaftan, and Viner, Parry's assistant, discover a chamber with a sarcophagus-like wall inset facing a projector that was used to revitalise the Cybermen. After Victoria is locked inside, the Doctor is called to help her escape, though he suspects Kaftan is to blame. Meanwhile, Jamie and Haydon, another member of the expedition, experiment with the control panel in another room. A Cyberman emerges and a gun fires, killing Haydon. The Doctor investigates and deduces that the room is a testing range for weapons; the Cyberman being a dummy to be used for such purposes. With two members dead, Parry decides to call off the expedition, only to be informed by pilot Captain Hopper that someone has sabotaged the rocket ship, meaning they are stranded until repairs are completed. Klieg