Time line therapy seems to be an off shoot or sub-branch of NLP if there is such a thing. There is an introduction to NLP which I found satisfying enough. Many of the chapters however seem to just documenting lectures given by Richard Badler (one of the founders of NLP). The book is a mish-mash of NLP techniques. The whole premise of time line therapy did not grab me at all. Not a book for me I am afraid, but for fans of NLP it might add some new insights or techniques.