Love, Mom by Iliana Xander

Mackenzie Casper is a brilliant student, but she is best known for her mother, a bestselling author whose dark, twisted thrillers have a dedicated fanbase worldwide. When her mother dies in an accident, fans across the world are left grieving and the investigators are asking: was it really an accident?

Mackenzie starts her own investigation, stumbling upon secrets that her family has lived with for years. Quickly, she realizes that her mother's path to stardom was etched with sinister lies that might have caught up to her.

Sometimes Fame is worth a murder, or worse.