Vintage crime/Black Lizard.

If Ridley Jones had slept ten minutes later or had taken the subway instead of waiting for a cab, she would still be living the beautiful lie she used to call her life. She would still be the privileged daughter of a doting father and a loving mother. Her life would still be perfect--with only tiny cracks to mar the otherwise flawless whole. But that's not what happened. Instead, those inconsequential decisions lead her to perform a good deed that puts her in the right place at the right time to unleash a chain of events that brings a mysterious package to her door--a package which informs her that her entire world is a lie. Suddenly forced to question everything she knows about herself and her family, she has no idea who's on her side and who has something to hide--even, and maybe especially, her new lover.--From publisher description