Georgia Williams' murder at the hands of college pal Jamie Reynolds was a crime that shocked the nation: chillingly executed and horrific in its sexual depravity.

But when Georgia's devastated mother, Lynnette, and father, Steve, questioned the events leading to their daughter's death, they discovered it was also entirely preventable.

At the time of Georgia's disappearance, Steve was - ironically - a highly-commended murder squad detective serving with West Mercia Police.

The same force, Steve and Lynnette discovered, had had Reynolds in its sights for years before Georgia's murder, but let him slip their net.

Drawing on Steve's inside police knowledge, the couple exposed the litany of failures that let Reynolds infiltrate their daughter's life, and allowed him to kill.

Now, in her powerful and moving memoir, Lynnette tries to get beyond the platitudes of 'mistakes made and lessons learned' to effect real change, and also details the heartbreaking aftermath of a crime that should never have happened.