The TARDIS takes its new passengers back to the dawn of history. There, the Doctor and his party are captured by a tribe who are trying to rediscover the secret of fire.
Did You Know?
The caveman tribe is named The Tribe of Gum. At no point in the serial is the phrase uttered onscreen. See more
The shadow of a boom microphone can be seen moving across Susan shortly after she leaves the TARDIS. See more
[to himself about the TARDIS
It's still a police box! Why hasn't it changed? Dear, dear - how very disturbing!
Featured in Doctor Who: Origins