You could read this book as a stand alone, but you'd really get a lot more out of it if you'd read [[A Question of Answers by Margaret Henderson Smith|A Question of Answers]] first.
{{amazontext|amazon=1845494067}} {{waterstonestextamazonUStext|waterstonesamazon=73612331845494067}} You can read more about Margaret Henderson Smith [[:Category:Margaret Henderson Smith |here]].