A maelstrom of original and ground-breaking information never seen before it was published some 30 years ago; by the man who "Lie to Me" was based upon. The first three chapters can be dry and redundant but they lay the foundation for what a lie is and what types there are. Chapter 4 gets into the meat of identification and can leave you exhausted after just a few pages; the 3 pages that describe a chosen 18 types of smiles, for example. And the long chapter on polygraphs (which I thought I'd end up merely flipping through) wound up being the most interesting section of the book, with much of it still relevant for today. The real-life historical examples (Hitler/Chamberlain, Watergate figures, murderers, and philanderers)used throughout work much better than the lies and liars he provides from literature (Updike, Shakespeare, and others). A later edition with actual photos of micro-expressions instead of the sparse pencil drawings contained in this edition will prove much more useful. A MUST-HAVE on the shelf of any sideline-psychologist.