This book goes far beyond what to lead based on your hand. (i.e top of a sequence, or 4th best)The author presents the reader with many bidding scenarios and ask you what to lead, based on the bidding. Then he explains the correct lead. He spends most of the book explaining how to look for clues from the bidding. Plus he presents some interesting lead directing bids and doubles.Only for those who want to invest some time in improving this vital aspect of the game.*BEWARE* that the same person posted 4 reviews here and gave the book 5 stars each time, skewing the results.Its a great book, but I dislike people who skew the ratings on purpose.