City of Mirrors — Melodie Johnson Howe

Running out of money, Diana Poole is forced to go back to the only work she knows: acting. Her much-loved husband and movie-star mother have died, and now Diana is over thirty-five. In Hollywood that means she might as well be dead. Still, a few key people remember her talent, and she lands a role in a new movie. But an actress should never get her hopes up, especially when she discovers the female lead's murdered body. Raised in her mother's shadow, Diana knows people in "the business" will go to dangerous lengths to protect their images. When her own life and career are threatened, Diana decides to fight back and find the killer. But unmasking the surprising murderer isn't that easy, especially when she uncovers what's real--and unreal--in her own life.