The author, Gregory Possehl, is one of the world's leading experts on the ancient Indus Valley. This recently published book is a summary of his extensive volumes summarizing ancient Indus archaeology and research.
The first of a four volume study by the senior American Indus scholar, covering the history of attempts to decipher the script. A very thorough history by an author highly sceptical of all attempts so far and an incredibly valuable overview for anyone seriously into the script.