Thought this was going to be a run of the mill horror. Has become the most unforgettable novel I have ever read. I have read probably read hundreds .Borrowed from a library initially , never forgot it. Finally found it on amazon. Keep loaning it to friends especially lorry drivers.Will appeal to men and woman ,both thought provoking and incredidbly sad,but gives us all hope in the face of death.'only the angels know'!!!!!!!Am a nurse by Profession and usally read psychology and related subjects.This book is definatly film material, I am surprised it is not, well not to my knowledge