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?
This episode takes place in 100,000 BC. See more
At about 5 minutes in, you can clearly see the structural bars that are holding the set of the TARDIS into place. 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