This is a good starter on reincarnation. However if you've read anything about this before this really isn't anything new. Don't get me wrong, the story of a psychiatrist finding out that examining the past lives of a patient of his would help her in her present. During the sessions he gets messages about being nicer to people and by being better to people we help ourselves.

Does it add anything to the existing corpus of stuff about reincarnation. Not really, it does though show a professional changing his mind when he's faced with the evidence