"One of the biggest problem areas for writers is conveying a character's emotions to the reader in a unique, compelling way. This book comes to the rescue by highlighting 75 emotions and listing the [[[possible body language cues, thoughts,]]] and visceral responses for each."
It lives up to the bracketed part at least. As other reviews have said, this is what it says: a thesaurus. Not an interesting one, or one that I found to be particularly helpful. The suggestions aren't unique or compelling, most are standard and common sense, and I saw nothing that was visceral. I was hoping for more practical examples, teaching by demonstration, rather than just pages with plain, rather repetitive lists, of what a person might do when experiencing a given emotion.
If you're really, really, struggling to show your character's emotions rather than telling them then this might be of use. But most of the information on these pages has no particular depth to it, and as such they are things you can readily guess at or invent yourselves. I would not recommend it, and I'm only giving it two stars because I think I've come into it with the wrong expectations.
The dozens of five star reviews leave me close to dumbfounded.