What would it take to make you intervene?When Ella Longfield overhears two attractive young men flirting with teenagegirls on a train, she thinks nothing of it—until she realises they are freshout of prison and her maternal instinct is put on high alert. But just asshe’s decided to call for help, something stops her. The next day, she wakesup to the news that one of the girls—beautiful, green-eyed Anna Ballard—hasdisappeared.A year later, Anna is still missing. Ella is wracked with guilt over what shefailed to do, and she’s not the only one who can’t forget. Someone is sendingher threatening letters—letters that make her fear for her life.Then an anniversary appeal reveals that Anna’s friends and family might havesomething to hide. Anna’s best friend, Sarah, hasn’t been telling the wholetruth about what really happened that night—and her parents have been keepingsecrets of their own.Someone knows where Anna is—and they’re not telling. But they are watchingElla.words : 83811