Inventions that changed the World book/cassette pack (Penguin Readers (Graded Readers)) - Tapa blanda

A metal object falls from the sky over the south of England, and strange creatures come out. But they are not human - they are fighting machines from Mars. When another object falls, and then another, people start to worry. Are the Martians trying to take over the Earth? A frightening and gripping story which has relevance to our own society and the dangers in the world today.