The book "In Search of a Dinosaur" - from the series "The Key of Time" - is a diary of one unusual expedition that went on a journey through time (through a door in an ordinary bookcase) in search of a mysterious dinosaur. Like any expedition report, this book contains a map, a route, drawings, and travel notes made on the margins of the diary. A fascinating story, told on behalf of the girl Macy, about how difficult it is to be young children in an alien world of huge animals, about how to survive among dinosaurs and return home helps them their ingenuity, resourcefulness and courage.