House of Glass by Sarah Pekkanen

On the outside they were the golden family with the perfect life. On the inside they built the perfect lie.

A young nanny who plunged to her death, or was she pushed? A nine-year-old girl who collects sharp objects and refuses to speak. A lawyer whose job it is to uncover who in the family is a victim and who is a murderer. But how can you find out the truth when everyone here is lying?

Rose Barclay is a nine-year-old girl who witnessed the possible murder of her nanny - in the midst of her parent's bitter divorce - and immediately stopped speaking. Stella Hudson is a best interest attorney, appointed to serve as counsel for children in custody cases. She never accepts clients under thirteen due to her own traumatic childhood, but Stella's mentor, a revered judge, believes Stella is the only one who can help.

From the moment Stella passes through the iron security gate and steps into the gilded, historic DC home of the Barclays, she realizes the case is even more twisted, and the Barclay family far more troubled, than she feared. And there's something eerie about the house itself: It's a plastic house, with not a single bit of glass to be found.

As Stella comes closer to uncovering the secrets the Barclays are desperate to hide, danger wraps around her like a shroud, and her past and present are set on a collision course in ways she never expected. Everyone is a suspect in the nanny's murder. The mother, the father, the grandmother, the nanny's boyfriend. Even Rose. Is the person Stella's supposed to protect the one she may need protection from?