The 133rd episode of Doctor Who airs on the BBC. This is the first story to feature the Cybermen, and is the final story of William Hartnell’s tenure as the first Doctor. 
With his son trapped in the orbiting space capsule with limited oxygen, General Cutler of Snowcap base has grown weary of standing idly by as the Cybermen hatch their plan for a takeover of Earth. But Cutler’s plan – which he sets in motion against the protests of both the United Nations and the Doctor, who seems increasingly exhausted by the struggle against the Cybermen, doesn’t offer much better odds of survival: a series of atomic bombs in strategic locations around the Earth will render the planet unsuitable for the Cybermen, but probably for humanity as well. With the Doctor out of commission, Ben takes it upon himself to try to sever Cutler’s remote control connection to the bombs.
written by Kit Pedler (credited onscreen as “Kitt Pedler”)
and Pat Dunlap and Gerry Davis (not credited onscreen)
directed by Derek Martinus
music not creditedCast: William Hartnell (The Doctor), Robert Beatty (General Cutler), Christopher Matthews (Radar technician), Christopher Dunham (R/T technician), Anneke Wills (Polly), Michael Craze (Ben), David Dodimead (Barclay), Dudley Jones (Dyson), Callen Angelo (Terry Cutler), Steve Plytas (Wigner), Ellen Cullen (Geneva Technician)
LogBook entry by Earl Green