It is quite good reading Wise Children and The Heart-Keeper at the same time because they both describe the world of Hollywood. In the case of Sagan it is the world of the screen writer Dorothy but the sense of a hollow world tinged with insincerity comes across in both books.
For Dorothy it is the moment when she is told that her second husband Frank has died. The man, who she still felt very fondly for, had spiralled into alcoholism after their marriage ended and he was supported by Dorothy even after they split.
She turns for sympathy to her house guest Lewis rather than her current boyfriend Paul. He decides that he wants to carry on living with her but wants to get a job so she sets up a screen test and a career in the movies beckons for the brooding young artist.