When single mum Joanna shares a rumour at the school gates - desperate to ingratiate herself with the clique of mothers at her son's new school - there is no going back . . . Rumour has it that a notorious child killer is living under a new identity, in their sleepy little town of Flinstead-on-Sea. Sally McGowan was just ten when she stabbed little Robbie Harris to death over 47 years ago - no photos of her exist since her release as a young woman.