Description:
When a boy goes missing and a policewoman starts drawing cave paintings, the Doctor suspects the Silurians are back. With the Brigadier distracted by questions about UNIT funding and problems at home, the Doctor swears Liz Shaw to secrecy and investigates alone. But Liz has enquiries of her own, teaming up with a journalist to track down people who don't exist. As the Silurians wake from their ancient slumber, the Doctor, Liz, and the Brigadier are caught up in a conspiracy to exploit UNIT's achievements. Unabridged.