New from Little, Brown/Reagan Arthur: The End of Everything by Megan Abbott.
About the book, from the publisher:
Thirteen-year-olds Lizzie Hood and Evie Verver are inseparable. To Lizzie, the Verver household is the world’s most perfect place, and her family, including her big-hearted father and impossibly glamorous older sister Dusty, is the world’s most perfect family.Learn more about the book and author at Megan Abbott's website.
Then Evie disappears. The only clue: a maroon sedan Lizzie spotted earlier in the day. As panic spreads through the suburban community, everyone looks to Lizzie for answers. Was Evie unhappy, troubled, upset? Would she have gotten into a stranger’s car?
Lizzie takes up her own furtive pursuit of the truth, pushing herself to the dark center of Evie’s world. Titillated by her own new power at the center of the disappearance, Lizzie uncovers secrets and lies that make her wonder if she knew her best friend at all.
The Page 69 Test: Bury Me Deep.