Genocide

Оригиналниот јазик е англиски.

Years after leaving UNIT, Jo Grant receives a plea for help from an old acquaintance. A palaeontological study of the earliest known humans is apparently under threat from a UNIT force led by a captain who does not officially exist. Investigating further, she begins to find herself out of her depth — and out of the twentieth century altogether... Meanwhile, the Doctor and Sam visit Earth in 210...