I read the book and it deals with the entirety of Hollywood's golden years, the Oscars, big studios that controlled most actors, the rise of independent studios, The Screen Actors Guild, Friendships with Howard Hawks, Hitchcock, Gable, Hepburn, Bergman, Grace Kelley and even sports, etc. So the focus of the book isn't just on "affairs" but does a good treatment of the overall picture of Hollywood and its well known and lesser known inhabitants. Growing up Randolph Scott was a cowboy hero of mine-hence my surprise at the part of the book that described Grants well known lovers (ie. Sophia Loren, etc.) both male and female including his 11 yr relationship with Scott. What comes across in the book is his up and down personal life that he tried desperately to keep out of the public's eye.
So the book isn't JUST about salacious stuff. It's well researched and gives the reader not just a "glance" at the post silent film era of Hollywood-a period that has always fascinated me.