Lost Girls (Lost Girls #1)
Kate Ellison

When a local girl from a bad neighborhood—known only as Sapphire—is found shot to death, no one seems to care. She was just one of the many lost girls who live their lives invisibly, between the cracks.
But sixteen-year-old Lo Marin changes all that when she stumbles upon a clue to Sapphire’s murder—a gorgeous and unusual butterfly pin. Lo has always loved to collect beautiful things, and believes she can read the story behind the objects. This one isn’t just speaking to her—it’s screaming.
As she becomes helplessly obsessed with the murder, Lo finds herself entangled in a violent underworld with a boy she can’t trust. In this riveting page-turner, one lost girl will track down another in an explosive mystery that may be the end of them all.