The Story of the Amulet - E. Nesbit

The third of the series featuring Cyril, Anthea, Robert and Jane: four children who are, as they often say, "the sort of people that wonderful things happen to". In 'Five Children and It' they were lucky enough to meet the magical, wish-granting Psammead - and in this final book they meet him once again. He guides them to an ancient Amulet that will help them find their hearts' desire - but it's only half an amulet, and seeking for the other half has them whizzing about through time on another series of amazing adventures. - Summary by Helen Taylor