The TARDIS is lured to Earth, London, 1985 by an alien distress signal. Investigating, the Doctor and Peri stumble upon an attempted bank robbery staged through the London sewers by a familiar foe – ex-Dalek agent, Lytton. But who is he working for this time?

For they soon discover there is something far nastier lurking in the sewers – Cybermen.

Why do the silver giants need a time machine? What is their devastating plan of attack? And what does it have to do with a catastrophic event that happened long ago in the Doctor’s past?

The TARDIS is lured to Earth, London, 1985 by an alien distress signal.

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