Gr 9 Up—Different as night and day, sisters Nick and Dara are practically joined at the hip. Nick is perpetually the cool and calm older one who calls the shots. Dara is always tagging along, longing to be in the spotlight. That was before the accident that left Dara injured and Nick shaken to the core. Now, the siblings barely speak to each other; they live together but never cross paths. Nick gets a job at a local amusement park and begins to interact with people again, mostly with her longtime best friend, but also with her sister's ex-boyfriend, Parker. As the summer continues, a young local girl goes missing and Nick finds herself getting more involved with the ensuing drama than she ever expected. The situation comes to a boiling point at Dara's birthday dinner when she disappears too, and it's up to Nick to piece the story together and discover what has happened to her sister. Like in her "Delirium" series and Before I Fall (2010, both HarperCollins), Oliver's characterizations and background stories are well-developed and compulsively readable. The relationship between Nick and Dara drives the plot and is very realistic. The twist the author incorporates at the end is dramatic without being absurd and was completely unexpected. Recommend to teens looking for a well-written work with a juicy ending. They will not be disappointed.—Morgan Brickey, Marion County Public Library System, FL