The Web of Fear is the partly missing fifth serial of the fifth season of the British science fiction television series Doctor Who, which was first broadcast in six weekly parts from 3 February to 9 March 1968. This serial — which marks the return of the Yeti, the Great Intelligence, and Professor Edward Travers — is the sequel to The Abominable Snowmen. It marks the first appearance of Colonel Alistair Lethbridge-Stewart, subsequently better known as the Brigadier, and acts as a precursor to the numerous later serials involving the UNIT organisation.