If you have the opportunity, buy this book. You may not want to read it right away because it does contain many synopsis of her stories, (including endings), but this is the one book I've found which really delves into Ms. Heyer as a person, researcher and writer. Many may not know this but her surname should be pronounced as "Hare" not "higher", nor "Hay err". The author Jane Aiken Hodge is quite an author herself. This book is well written and helps the reader understand the period in which Ms. Heyer writes. It covers the short stories, the murder mysteries, the historicals, the regencies, and the short papers and thesis Ms. Heyer wrote. I can't emphasize enough that if you are beginning a Heyer library this must be one of the books to own.