It's been many years since Victoria Waterfield travelled through time and space fighting monsters and dictators. Now she's back on Earth fighting for the future of the planet. But are her environmental campaigns so far removed from her former adventures in the vortex?

As trucks carrying nuclear waste start to vanish into the air, her friends are kidnapped by a dangerous alien police force and a nuclear power plant runs dangerously close to meltdown... Victoria spies a familiar blue box.

The Doctor. After all this time, the Doctor has come back.

And now... Victoria Waterfield is going to kill him.

Cast:

• Colin Baker (The Doctor)
• Nicola Bryant (Peri Brown)
• Deborah Watling (Victoria Waterfield)
• Victoria Alcock (Marion)
• Andrew Dickens (Leiss)
• Greg Donaldson (David)
• Howard Gossington (Weska)
• James Hayward (Sean)
• Miles Jupp (Dominic)
• David Warwick (Dysart)