Eight years ago, Kim Hockney's little sister Judy disappeared. The family have never been able to stop hoping that she's still alive. Kim can never forget that she let Judy run off that afternoon, but now someone thinks they've found her.
Kim Hockney has a secret. It's to do with the terrible thing that happened eight years ago - the day when her five year old sister Judy went missing. Her parents have always been careful not to blame her but she knows they look at her and wonder what her little sister would have been like, if Kim hadn't let her run off that dark afternoon. Then one day some new evidence turns up.