One could argue that the state of Califonia casts a shadow over the entire collection of essays. In the American consciousness, California evokes several images:
In the essay "Holy Water," Didion outlines how a system of aquaducts and reserviors provides water across the entire state, making life in the middle of the desert possible. A particularly glaring example of the far-reaching effects of the system is on pp. 62 and 63, tracing a tropical storm's effects on a movie shooting schedule.
Didion says "This is a Calfornia Parable, but a true one."