The Spellman Files by Lisa Lutz, narrator Ari Graynor

Isabel "Izzy" Spellman grew up with parents who are private investigators. She also grew up with an older brother who was perfect. So she decided to become a nosy screw up. That more or less changed when she messed up enough to bother even her brother when she turns 23. Now she's 28 and her sister has been missing for three days. There is a little bit of hopping in time but most of the story is told in chronological order describing her parents, her former cop uncle, and her fourteen-year-old sister who wants nothing more than to be a private investigator. 

This book has actually aged better than I thought.

Four stars

#1 Spellman Series
This book came out January 1, 2007

Followed by Curse of the Spellmans

Audiobook from Libby

Opinions are my own