Quarter Past Two On A Wednesday Afternoon by Linda Newbery
It was the day when everything stopped. At quarter past two on a hot afternoon in August, Anna's beautiful, headstrong elder sister Rose disappears. Twenty years later, Anna still doesn't know whether Rose is alive or dead. In her early thirties now, she sees her future unfolding - with sensible, serious Martin and a grown-up, steady job - and finds herself wondering if this is what she really wants. Unable to take control of her life while the mystery of her sister's disappearance remains unsolved, Anna begins to search for the truth: what did happen to Rose that summer's day? The stunning first adult novel from the distinguished Costa Award winner.