From back cover: Doctor Who meets his clone. Doctor Who, that cocky, crazy, cosmic hobo, and his delightful companion, Sarah, land in the small English village of Devesham. The TARDIS has brought them safely home at last. Or has it?
At first, the picturesque village seems deserted, but then they discover zombie-like inhabitants who won't answer their questions, and a mysterious soldier who marches over a cliff and reappears without a scratch. And then there are the weird coffin-like meteorites that open up and contain human-like creatures. Have thew body snatchers returned?
What Doctor Who doesn't know is that the village is not English at all, nor is it on Earth. It's a replica on the polluted Planet Oseidon, the radiation-infested home of the Kraals. The few surviving Kraals must find a new home fast and are sending androids to Earth to take it over. Will Doctor Who be able to out-smart his own android clone in a face-to-face battle of wits and stop the android invasion of Earth?