I don't know how many of you know this but Bridge To Terabithia is really a Christian novel on the level of Narnia.In fact Katherine Paterson the author of the novel even has a scene in the book where Jess gives Les a copy of the Narnian stories to read.
This should not be too surprising as Mrs.Paterson is herself a Christian.
She is Presbyterian and was born and grew up on the mission field,especially Japan.She still enjoys collecting and writing about Japan and Japanese culture.
(source:March 2007 interview in Christianity Today)