What role does truth play in The House at the End of the World? What ideas does Koontz portray about lying?

Discuss the symbolism of the fox. Why did Koontz choose this animal for Katie’s companion?

Though Katie dismisses it, Jacob’s Ladder—its house, its grotto, and the history of its first owner, Joe Smith—contains a lot of Christian symbolism. What does this mean in context of the novel as a whole?