I'll do a full review later, but for now I wanted to say that I'm enjoying the book Consulting Spirit, by Dr. Ian Rubenstein, about a British medical doctor's gradual acceptance of his own mediumistic abilities. It's written in a wry, engaging style and captures the natural (and healthy) skepticism that most people bring to this subject. Sometimes I think that accounts like this, presenting the reactions of ordinary people to anomalistic phenomena, are ultimately more convincing than any amount of scientific evidence.
Here's the book's sales page on the publisher's site, which includes links to various online bookstores (left side of the page, below the cover photo):