Spookily enough I got this book out of the library about an hour before I heard she had died. If this is your genre it's a great read. She concentrates mainly on the Golden Age where writers such as Agatha Christie, Dorothy L. Sayers and Ngaio Marsh were hitting their stride. She talks about Sherlock Holmes and Dr Watson as well as the need for a Watson type character as narrator to move stories along and shoot the breeze about clues. She hardly mentions her own work although she would have been justified.
Read it to: help organise your thoughts.