Doctor Who: The Newbies Guide
The Web of Fear
This is the fifth story in Season five. One episode is missing from the archives.
The second Doctor is short with a beatles moptop. He tends to act the part of a fool and give events a push in the right direction rather than directly taking control.
Jamie McCrimmon is a scots piper who met the Doctor after the battle of Culluden in The Highlanders.. He is proud of his Scottishness and wears a kilt and carries a dirk (knife).
Victoria Waterfield is an orphan from 1866. In The Evil of the Daleks her father and his friend Theodore Maxtible established a line between Victorian London and the Daleks' home planet of Skaro. The Daleks held Victoria hostage in order to control them. The Doctor and Jamie defeated the Daleks, but her father died. Victoria then chose to travel with the Doctor and Jamie.
Recurring and Historical Characters
Professor Edward Travers was an explorer in Tibet. In The Web of Fear, he encountered the second Doctor, Jamie, and Victoria. He helped them defeat an incorporeal alien called the Great Intelligence and its servants who took the form of robotic Yeti.
The Yeti are robotic servants of the Great Intelligence. They are controlled by means of a "control sphere". If the sphere is removed from a Yeti, it ceases to function.
The Great Intelligence is an incorporeal alien entity. In The Abominable Snowmen, the Doctor prevented its plans to take over the Det Sen monastery in Tibet. During those events, it used robotic servants in the shape of Yeti.
This is a sequel to The Abominable Snowmen. It should be easy enough to follow without having "seen" the first story or read its novelisation, though.