Textbook not biography
This is one of the worst attempts at a celebrity biography I have ever read. If the author has any great affinity for his subject or even the world of Broadway and dance, he succeeds only in hiding it. There are no stories about Verdon's emotional life to speak of, no insights into what made her the star she was, only the cutting and pasting of details from other sources. He doesn't provide context for some of the people mentioned, making it impossible to determine whether their effect on her life was significant or not. There is almost no look into Miss Verdon's inner life, just the repetition in tedious detail of every television or movie appearance she ever made, including the show's plot and a description of what she wore in any film or photos.
His writing is rarely ever inspired as it provides the warmth of a textbook author who did not benefit from the services of a good editor. Prime example, beyond many instances of awkward syntax and typos, is the fact that he brings the book to its natural conclusion with her memorial and then tacks on another chapter describing how she kept busy and supported Fosse's efforts by serving as his unofficial dance assistant in the early 1960s.
Dry as burnt toast and almost devoid of color, I do not recommend this book. Gwen Verdon deserves a much better biographer.