Horrors. I will grant that the characterization is good and I am grateful that Ob's emotional healing does not directly come from his visit to a medium. There are moments that might help a reader be more sympathetic toward people who look or act in a way that seems odd to them. At this point, I run out of positive comments to make.
Missing May is loaded with deceit. There is much to, at best, confuse readers, and at worst, to entice them into the "Church" of Spirituality, the occult, seeking answers with mediums and more. This bundle of confusion is all wrapped in a Newbery award winner which will be on virtually every required reading list throughout the land. This book is a good tool for the enemy of our souls. It is certainly not one I will put in the hands of our children or recommend to any others.