Interesting take
On early Hollywood, the transition to talking pictures, and the beginnings of an early movie actress, possibly drawn from several real-life stories of actresses. The depiction of an actress working herself, or being worked to, exhaustion and a nervous breakdown, felt very real. Not sure about the eventual "reason" for the collapse, which is revealed in the end, but whatever. (That's why only 4 stars.) I have the author's next book about Hollywood on deck because I find reading about the early days of the screen, real or fictional, very interesting.
Note: I do not like TWs. Your opinion may differ, and that's fine.