Penelope (Lo) Marin has always loved to collect beautiful things. But in the year since her brother Oren's death, Lo's hoarding has blossomed into a full-blown, potentially dangerous obsession. She discovers a beautiful, antique butterfly pendant during a routine scour at a weekend flea market and recognizes it as having been stolen from the home of a recently murdered girl. And as usual, when Lo begins to obsess over something, she can't get it out of her mind.
Olivia Tithe was excited for the summer and spending it with her best friend, Stern. But that was ruined when he was murdered...by Olivia's mother. Flashing forward, Olivia's life has been transformed since that awful night. After her mother's incarceration, Olivia must move on, but she hates her father's new fiancée, Heather, and with her dad's new real estate development (she calls it Ghost Town) in the works, she barely sees him. But a new boy, Austin, has kindled feelings inside her that she hasn't felt since Stern's death. Arriving at the same time as this new guy is a mysterious note that brings Stern's murder back to the forefront.