Doctor Who: Scales of Injustice

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 his assistant 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. What is the mysteriou...