100,000 BC

This was the very first serial in the BBC television series Doctor Who.

Each episode has its own title as follows:

• An Unearthly Child
• The Cave of Skulls
• The Forest of Fear
• The Firemaker

No overall story title appeared onscreen, but 100,000 BC is the title that was used by the production team at the time of transmission. Due to the absence of an onscreen title, early reference works have titled the story as variously The Tribe of Gum (an early working title), The Cavemen (a quick description of the story material) and An Unearthly Child (the title of the first episode). Which title should be used is a subject that has generated deep controversy amongst fans of the series.